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Item 7.01. Regulation FD Disclosure.
On September 20, 2021, Synlogic, Inc. (the “Company”) provided slides to accompany its press release announcing positive data from clinical studies evaluating both SYNB1618 and SYNB1934, investigational Synthetic Biotic™ medicines for the treatment of Phenylketonuria (PKU) (the “Press Release”). A copy of the slides is furnished as Exhibit 99.1 to this Current Report on Form 8-K. The Company has also updated its investor presentation (the “Investor Presentation”), which the Company expects to use in connection with general corporate presentations and will be made available on the Company’s website or distributed by the Company in hardcopy or electronic form. A copy of the updated Investor Presentation is attached as Exhibit 99.2 to this Current Report on Form 8-K. The Investor Presentation is current as of September 20, 2021, and the Company disclaims any obligation to update the Investor Presentation after such date.
The information in this Item 7.01 of this Current Report on Form 8-K (including Exhibit 99.1) shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.
Item 8.01. Other Events.
On September 20, 2021, Synlogic issued the Press Release which is filed as Exhibit 99.3 to this Current Report on Form 8-K and is incorporated herein by reference.
Item 9.01. Financial Statements and Exhibits.
| (d) | Exhibits |
| 99.1 | Slide Presentation of Synlogic, Inc. dated September 20, 2021 | |
| 99.2 | Investor Presentation of Synlogic, Inc. dated September 20, 2021 | |
| 99.3 | Press release dated September 20, 2021 | |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document) | |
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
| Synlogic, Inc. | ||||||||
| Date: September 20, 2021 |
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By: | /s/ Gregg Beloff |
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| Name: | Gregg Beloff | |||||||
| Title: | Interim Chief Financial Officer | |||||||
Designed for Life Phenylketonuria Clinical Program Update 20 September 2021 Exhibit 99.1
Forward Looking Statements This presentation contains “forward-looking statements” that involve substantial risks and uncertainties for purposes of the safe harbor provided by the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this presentation regarding strategy, future operations, future financial position, future revenue, projected expenses, prospects, plans and objectives of management are forward-looking statements. In addition, when or if used in this presentation, the words “may,” “could,” “should,” “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,” “predict” and similar expressions and their variants may identify forward-looking statements. Examples of forward-looking statements include, but are not limited to, the approach we are taking to discover and develop novel therapeutics using synthetic biology; statements regarding the potential of our platform to develop therapeutics to address a wide range of diseases, including: metabolic diseases, inflammatory and immune disorders, and cancer; the future clinical development of Synthetic Biotic medicines; the potential of our technology to treat phenylketonuria and cancer; the expected timing of our anticipated clinical trial initiations and availability of clinical data; the benefit of orphan drug and fast track status; the adequacy of our capital to support our future operations and our ability to successfully initiate and complete clinical trials; the results of our collaborations; and the difficulty in predicting the time and cost of development of our product candidates. Actual results could differ materially from those contained in any forward-looking statement as a result of various factors, including, without limitation: the uncertainties inherent in the preclinical development process; our ability to protect our intellectual property rights; and legislative, regulatory, political and economic developments, as well as those risks identified under the heading “Risk Factors” in our filings with the SEC. The foregoing review of important factors that could cause actual events to differ from expectations should not be construed as exhaustive and should be read in conjunction with statements that are included herein and elsewhere, including the risk factors included in our quarterly report on Form 10-Q filed with the SEC on August 12, 2021, and in any subsequent filings we make with the SEC. The forward-looking statements contained in this presentation reflect our current views with respect to future events. We anticipate that subsequent events and developments could cause our views to change. However, while we may elect to update these forward-looking statements in the future, we specifically disclaim any obligation to do so. These forward-looking statements should not be relied upon as representing our view as of any date subsequent to the date hereof.
Our Program Today Interim Analysis of SYNB1618 Phase 2 SynPheny-1 Study Dr. Aoife Brennan, CEO 01 SYNB1934 Phase I Data, Dose Cohorts 1-3 Dr. David Hava, CSO 02 Platform Implications and Next Steps in PKU Dr. Aoife Brennan, CEO 03 Q&A Management Team 04
Progress in Phenylketonuria Dr. Aoife Brennan, MB CHB President & CEO
Synthetic Biotic Medicines: a novel approach in Phenylketonuria (PKU) Potential to treat all PKU patients with a safe oral approach Synthetic Biotic Medicines Today: two trials with interim results Current and emerging treatment options leave many patients behind PKU SYNB1618 strain achieved prespecified 20% Phe lowering target in PKU patients SYNB1934 strain demonstrated two-fold greater activity than SYNB1618 in healthy volunteers Ph. 1 HV
PKU remains an area of high unmet need Adults ~12,300 U.S. 65% out of Phe control Pediatrics ~5,000 U.S. 25% out of Phe control Patients Julia, living with PKU 90% of patients and caregivers express need for greater natural protein intake (1) (1) Puurunen et al, Global PKU Patient Meeting, September 2021 Patients Challenges Extremely challenging low protein diet with low compliance Significant risk of neurocognitive impairment in patients with elevated Phe levels Substantial need for increased intake of natural protein enabled by Phe reductions
Disease State Out of Phe Control (>360 μmol/L of Phe) In Phe control (<360 μmol/L of Phe) Patient Goal Lower blood Phe to reduce risk of neurocognitive impairment Enable greater dietary protein intake while maintaining Phe control PKU patients are poorly served today Significant market opportunity, large unmet need, with potential for new products to capture share Daily injection Allergic reactions REMS Adults only 70% fail to respond Only 10% all-comers fasting Phe reduction (2) Limited Therapeutic Options (2) Kuvan FDA statistical review, 25 Nov 2007
Synthetic Biotic Medicines: Differentiated product candidates for the treatment of PKU Synthetic Biotic medicines for the treatment of PKU present a compelling opportunity to change patients’ lives Designed for PKU Oral Reversible Gut Restricted
Intuitive and direct approach to treating PKU Unique mechanism of action generates quantitative, measurable biomarker of Phe metabolism: TCA (trans-cinnamic acid) Oral therapy, 3 x day with meals Dietary Phe Reduce plasma Phe or enhance protein tolerance Converted by Synthetic Biotic to harmless metabolites (TCA)
Interim Analysis of SYNB1618 SynPheny-1 Phase 2 Study in PKU
6-day diet run in Individualized diet plan to match baseline Phe intake Stable study diet: diet run-in through 2 weeks post treatment Diet Control Endpoints Fasting Plasma Phe levels (day -1, 7, 14, 29) Labelled D5-Phe 24hr AUC, change from baseline after meal challenge (day -1, 15) Day 29 Fasting Phe 3 days Dose 1 1e11 Dose 3 1e12 Dose 4 2e12 7 days Diet run-in 6 days 2 days D5-Phe AUC Baseline Fasting Phe Dose 2 3e11 3 days D5-Phe AUC Day 14 Fasting Phe Day 7 Fasting Phe Population IA of 8 subjects receiving SYNB1618 Adult PKU patients, plasma Phe levels ≥ 600 µmol/L Stable diet No use of Kuvan or Palynziq SYNB1618 Phase 2 SynPheny-1 study in PKU: Design Safety Follow Up
SYNB1618 metabolized Phe into TCA and prevented Phe absorption after meal challenge Percent change from baseline +/- 95% confidence interval. TCA = trans-cinnamic acid. AUC = Area under curve. 4 of 8 patients experienced >40% D5-Phe lowering after meal challenge TCA Production Phe absorption into plasma D5 Phe Meal Challenge (2e12 dose, N=8, Days -1 and 15)
SYNB1618 reduced fasting plasma Phe levels Fasting Plasma Phe Levels (N=8) Percent change from baseline +/- 95% confidence interval. * = Statistically significant Cessation of treatment 4 of 8 patients experienced >30% reduction in fasting Plasma Phe at Day 7 or Day 14
Summary of interim safety analysis Safety analysis cut-off: 30 July 2021. Includes all patients (N = 9) through Day 15. Does not include Day 29 assessments for all patients. One discontinuation for anxiety, not drug related. Gut restricted Clearance upon cessation of dosing as expected Generally well tolerated Tolerability profile consistent with experience in healthy volunteers Mild to Moderate GI AEs No treatment-related discontinuations No SAEs or new safety issues identified
SYNB1934 Phase 1 Study Results Dr. David Hava, PhD Chief Scientific Officer
Synthetic biology platform optimized activity of therapeutic strain Increased activity in vivo (Non-human primates) Monahan et al, SEED 2021. * = Statistically significant. Error bar is mean +/- standard deviation. * SYNB1934 Developed from SYNB1618 using directed evolution of PAL3 enzyme in whole cell assay Potential to provide increased Phe lowering activity and flexibility to optimize clinical profile Increased activity two-fold in non-human primates using directed evolution approach
SYNB1934 Ph. 1 study allows head-to-head comparison of strains 3x1011 SYNB1934 1x1012 SYNB1934 Optional higher SYNB1934 Cohort 2 Cohort 1 Cohort 3 Cohort 4 Study Design Endpoints Safety and tolerability Biomarkers of Phe consumption SYNB1934 clearance after cessation of dosing 6x1011 SYNB1934 6x1011 SYNB1618 Four-day dose ramp, two days dosing D5-Phe meal challenge Study will determine if SYNB1934 has improved activity over SYNB1618
Mean +/- 90% confidence interval. TCA = trans-cinnamic acid SYNB1934 Dose Response (D5-TCA) SYNB1934 metabolized labeled D5-Phe in a dose dependent manner N = 32 SYNB1934 exhibited clear and consistent dose responsive activity in humans
Mean +/- 90% confidence interval. TCA = trans-cinnamic acid HA = hippuric acid SYNB1934 demonstrated two-fold improvement over SYNB1618 in biomarkers of Phe metabolism SYNB1934 and SYNB1618 D5-TCA and D5-HA N = 12
Robust labeled D5-Phe reduction in healthy volunteers at multiple dose levels Percent change from baseline +/- 90% confidence interval. Cross study comparison. N = total study (all cohorts) D5 Phe Reduction: SYNB1618 Previously Presented D5 Phe Reduction: SYNB1934 Current Study N = 32 N = 88
Prospective modeling for SYNB1618 predicted clinical activity Model range represents relative activity of enzymes: PAL and LAAD Prospective biomarker driven modeling suggests SYNB1934 provides opportunity for increased Phe lowering Prospective Model Results (1e12 Live Cells) SYNB1618 Modeling Model predicted 15-40% Phe lowering with SYNB1618 1e12 dose Clinical Observation Mean 20% Phe lowering with SYNB1618 at 1e12 dose Model predicted 20-45% Phe lowering with SYNB1618 at 2e12 dose Mean 40% Phe lowering with SYNB1618 at 2e12 dose after meal challenge Previously Presented
Healthy volunteers PKU Patients SYNB1618 1e12 dose SYNB1934 1e12 dose 7% D5-Phe reduction post-meal 27% D5-Phe reduction post-meal 20% Fasting plasma Phe Expectation of improved clinical profile SYNB1934 to be evaluated in new arm of SynPheny-1 study
Portfolio Implications and Next Steps in PKU
Synthetic Biotic Platform is enabling engine for drug development Internal process development and GMP manufacturing of live biotherapeutic Modular SynBio components enables rapid, iterative product development Prospective, biomarker driven modeling predictive of therapeutic effect Deep synthetic biology expertise: Internal + Ginkgo Bioworks Synthetic Biotic Platform Synthetic Biotic Platform Platform Integrated platform can repeatedly and rapidly generate optimized clinical candidates Prospective modeling defines target product profiles Optimization of strains creates compelling clinical profiles Integrated translational and manufacturing capabilities enables rapid path to and through clinic
SYNB1618 Synthetic Biotic platform enables portfolio of high value metabolic indications Exploratory Preclinical IND-Enabling Studies Phase 1 Phase 2 Phenylketonuria (PKU) SYNB1618 SYNB1934 IA Data: Today Head-to-Head Data: Today Phase 2 Data: H1 2022 Enteric Hyperoxaluria SYNB8802 Phase 1B Data: 2022 Undisclosed Metabolic #1 IND Filing: 2022 Undisclosed Metabolic #2 Candidate Declaration: 2022 We are applying biomarker driven predictive modelling and strain optimization across the portfolio of metabolic indications
PKU program to rapidly advance towards pivotal program H2 2021 H2 2022 H1 2022 Demonstrated proof of concept of SYNB1618 DELIVERED Ph. 2 SynPheny Interim Analysis Head-to-head data in HV (SYNB1618 & SYNB1934 strain) DELIVERED Ph2 SynPheny full read-out (SYNB1618 & SYNB1934 strain) EXPECTED Start of pivotal program (with best strain) EXPECTED Demonstrated enhanced Phe metabolization of SYNB1934 Significant additional value inflection points in PKU program in 2022
Synthetic Biotic Medicines: a novel approach in Phenylketonuria (PKU) SYNB1618 strain achieved prespecified 20% Phe lowering target in PKU patients SYNB1934 strain demonstrated two-fold greater activity than SYNB1618 in healthy volunteers SYNB1934 Ph. 1 HV Synlogic intends to begin pivotal study planning and advance the best asset into Phase 3 in 2022
Thank you to our study sites, patients, and investigators
Available For Questions Dave Hava, PhD Chief Scientific Officer Daniel Rosan Head of Finance & Investor Relations Aoife Brennan, MB ChB President & CEO Antoine Awad Chief Operating Officer
Bringing the Transformative Power of Synthetic Biology to Medicine Corporate Presentation September 2021 Exhibit 99.2
Forward Looking Statements This presentation contains “forward-looking statements” that involve substantial risks and uncertainties for purposes of the safe harbor provided by the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this presentation regarding strategy, future operations, future financial position, future revenue, projected expenses, prospects, plans and objectives of management are forward-looking statements. In addition, when or if used in this presentation, the words “may,” “could,” “should,” “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,” “predict” and similar expressions and their variants may identify forward-looking statements. Examples of forward-looking statements include, but are not limited to, the approach we are taking to discover and develop novel therapeutics using synthetic biology; statements regarding the potential of our platform to develop therapeutics to address a wide range of diseases, including: metabolic diseases, inflammatory and immune disorders, and cancer; the future clinical development of Synthetic Biotic medicines; the potential of our technology to treat phenylketonuria and cancer; and the expected timing of our anticipated clinical trial initiations and availability of clinical data; the benefit of orphan drug and fast track status; the adequacy of our capital to support our future operations and our ability to successfully initiate and complete clinical trials; the results of our collaborations; and the difficulty in predicting the time and cost of development of our product candidates. Actual results could differ materially from those contained in any forward-looking statement as a result of various factors, including, without limitation: the uncertainties inherent in the preclinical development process; our ability to protect our intellectual property rights; and legislative, regulatory, political and economic developments, as well as those risks identified under the heading “Risk Factors” in our filings with the SEC. The foregoing review of important factors that could cause actual events to differ from expectations should not be construed as exhaustive and should be read in conjunction with statements that are included herein and elsewhere, including the risk factors included in our annual report on Form 10-K filed with the SEC on August 12, 2021, and in any subsequent filings we make with the SEC. The forward-looking statements contained in this presentation reflect our current views with respect to future events. We anticipate that subsequent events and developments could cause our views to change. However, while we may elect to update these forward-looking statements in the future, we specifically disclaim any obligation to do so. These forward-looking statements should not be relied upon as representing our view as of any date subsequent to the date hereof.
Solid Tumors Monotherapy: target engagement, meaningful pharmaco-dynamic effects, good safety Combination with anti-PDL1: ongoing Inflammatory Bowel Disease Advancing research collaboration with Roche on novel IBD target Metabolic programs Immunology Multiple high value indications accessible with Synthetic Biotic Medicines Phenylketonuria (PKU) SYNB1618 strain achieved prespecified 20% Phe lowering target in PKU patients in interim analysis SYNB1934 strain demonstrated two-fold greater activity than SYNB1618 in healthy volunteers Enteric Hyperoxaluria Proof of mechanism demonstrated by SYNB8802 in Phase 1A with dietary hyperoxaluria induced in healthy volunteers Phase 1B patient data expected 2022 in patients with enteric hyperoxaluria Clinical benefit of the Synthetic Biotic platform demonstrated
A new class of medicines Enabling engine of synthetic biology, manufacturing and translational capabilities Creates multiple product opportunities Robust pipeline Rare metabolic therapies that consume toxic metabolites from the GI tract Therapies that leverage the ability of bacteria to interact with the immune system Synthetic Biotic platform Targeted & controllable, patient friendly treatment Non-pathogenic bacterial chassis + Programable, engineering Toxin Promoter Inducer Effector Biomarker Biomarker
Phenylketonuria (PKU) SYNB1618 Immuno-Oncology SYNB1891 Inflammatory Bowel Disease Enteric Hyperoxaluria SYNB8802 SYNB1618 Undisclosed Metabolic Program #1 Undisclosed Metabolic Program #2 PoC 2022 Combo study late ‘21 Robust pipelines with meaningful catalysts Metabolic pipeline Metabolite consumption in the GI tract Immunology pipeline SYNB1934 Undisclosed IBD Program #1 Exploratory Preclinical IND-Enabling Studies Phase 1 Phase 2 IND 2022
Rationale High unmet need across inherited and acquired metabolic diseases Multiple large and underserved markets Diseases with known pathophysiology Dietary intervention validates GI approach Bacteria evolved to survive in the GI tract Ability to deploy multiple enzyme pathways Drug-like approach without genetic drift or colonization PKU data demonstrates SYNB compounds can consume toxic metabolites in the human GI tract and impact systemic levels of that metabolic Validated Biology Unmet Medical Need Unique Advantages Proof of Concept Why metabolic disease? Why Synthetic Biotic medicine? Synthetic Biotic medicines: a novel approach to metabolic disease
Applying Synthetic Biotic medicines to PKU and Enteric Hyperoxaluria Unique Advantages Platform Proof of Concept Validated Biology Unmet Medical Need Phenylketonuria (PKU) Enteric Hyperoxaluria (HOX) Many patients unable to control Phe ~70% pts do not respond to BH4 oral therapy Recurrent and chronic kidney stones; Increased risk of chronic kidney disease progression No effective interventions or treatments Lower dietary Phe intake = lower plasma Phe levels = improved cognitive outcomes Lower dietary oxalate intake = lower urinary oxalate = improved kidney outcomes Modality able to consume Phe in the GI tract before it can cause damage Modality able to consume oxalate throughout GI tract, including colon SYNB1618 consumes Phe and lowers fasting Plasma Phe levels in patients with PKU SYNB8802 consumes oxalate in healthy volunteers at clinically meaningful levels
Phenylketonuria (PKU) Potential to treat all PKU patients with a safe oral approach Synthetic Biotic Medicines Today: two trials with interim results Current and emerging treatment options leave many patients behind PKU SYNB1618 strain achieved prespecified 20% Phe lowering target in PKU patients SYNB1934 strain demonstrated two-fold greater activity than SYNB1618 in healthy volunteers Ph. 1 HV
PKU remains an area of high unmet need Adults ~12,300 U.S. 65% out of Phe control Pediatrics ~5,000 U.S. 25% out of Phe control Patients Julia, living with PKU 90% of patients and caregivers express need for greater natural protein intake (1) (1) Puurunen et al, Global PKU Patient Meeting, September 2021 Patients Challenges Extremely challenging low protein diet with low compliance Significant risk of neurocognitive impairment in patients with elevated Phe levels Substantial need for increased intake of natural protein enabled by Phe reductions
Disease State Out of Phe Control (>360 μmol/L of Phe) In Phe control (<360 μmol/L of Phe) Patient Goal Lower blood Phe to reduce risk of neurocognitive impairment Enable greater dietary protein intake while maintaining Phe control PKU patients are poorly served today Significant market opportunity, large unmet need, with potential for new products to capture share Daily injection Allergic reactions REMS Adults only 70% fail to respond Only 10% all-comers fasting Phe reduction (2) Limited Therapeutic Options (2) Kuvan FDA statistical review, 25 Nov 2007
Synthetic Biotic Medicines: Differentiated product candidates for the treatment of PKU Synthetic Biotic medicines for the treatment of PKU present a compelling opportunity to change patients’ lives Designed for PKU Oral Reversible Gut Restricted
Intuitive and direct approach to treating PKU Unique mechanism of action generates quantitative, measurable biomarker of Phe metabolism: TCA (trans-cinnamic acid) Oral therapy, 3 x day with meals Dietary Phe Reduce plasma Phe or enhance protein tolerance Converted by Synthetic Biotic to harmless metabolites (TCA)
6-day diet run in Individualized diet plan to match baseline Phe intake Stable study diet: diet run-in through 2 weeks post treatment Diet Control Endpoints Fasting Plasma Phe levels (day -1, 7, 14, 29) Labelled D5-Phe 24hr AUC, change from baseline after meal challenge (day -1, 15) Day 29 Fasting Phe 3 days Dose 1 1e11 Dose 3 1e12 Dose 4 2e12 7 days Diet run-in 6 days 2 days D5-Phe AUC Baseline Fasting Phe Dose 2 3e11 3 days D5-Phe AUC Day 14 Fasting Phe Day 7 Fasting Phe Population IA of 8 subjects receiving SYNB1618 Adult PKU patients, plasma Phe levels ≥ 600 µmol/L Stable diet No use of Kuvan or Palynziq SYNB1618 Phase 2 SynPheny-1 study in PKU: Design Safety Follow Up
SYNB1618 metabolized Phe into TCA and prevented Phe absorption after meal challenge Percent change from baseline +/- 95% confidence interval. TCA = trans-cinnamic acid. AUC = Area under curve. 4 of 8 patients experienced >40% D5-Phe lowering after meal challenge TCA Production Phe absorption into plasma D5 Phe Meal Challenge (2e12 dose, N=8, Days -1 and 15)
SYNB1618 reduced fasting plasma Phe levels Fasting Plasma Phe Levels (N=8) Percent change from baseline +/- 95% confidence interval. * = Statistically significant Kuvan FDA statistical review, 25 Nov 2007 Cessation of treatment 4 of 8 patients experienced >30% reduction in fasting Plasma Phe at Day 7 or Day 14
Summary of interim safety analysis Safety analysis cut-off: 30 July 2021. Includes all patients (N = 9) through Day 15. Does not include Day 29 assessments for all patients. One discontinuation for anxiety, not drug related. Gut restricted Clearance upon cessation of dosing as expected Generally well tolerated Tolerability profile consistent with experience in healthy volunteers Mild to Moderate GI AEs No treatment-related discontinuations No SAEs or new safety issues identified
SynPheny POC Study in PKU Interim analysis demonstrated 20% reduction in labelled plasma Phe, providing clinically meaningful endpoint for patients without other treatment options Reduction in labelled plasma Phe after a meal challenge, not influenced by diet Reduction in fasting plasma Phe (on treatment relative to baseline, holding diet steady) Consistency in response: Responder population or consistent response across subjects Learning opportunities in SynPheny
SYNB1934: An evolved strain with potential for improved Phe-lowering Directed Evolution Non-Human Primates: Biomarker of Phe-Consumption
SYNB1934 Ph. 1 study allows head-to-head comparison of strains 3x1011 SYNB1934 1x1012 SYNB1934 Optional higher SYNB1934 Cohort 2 Cohort 1 Cohort 3 Cohort 4 Study Design Endpoints Safety and tolerability Biomarkers of Phe consumption SYNB1934 clearance after cessation of dosing 6x1011 SYNB1934 6x1011 SYNB1618 Four-day dose ramp, two days dosing D5-Phe meal challenge Study will determine if SYNB1934 has improved activity over SYNB1618
Mean +/- 90% confidence interval. TCA = trans-cinnamic acid HA = hippuric acid SYNB1934 demonstrated two-fold improvement over SYNB1618 in biomarkers of Phe metabolism SYNB1934 and SYNB1618 D5-TCA and D5-HA N = 12
Robust labeled D5-Phe reduction in healthy volunteers at multiple dose levels Percent change from baseline +/- 90% confidence interval. Cross study comparison. N = total study (all cohorts) D5 Phe Reduction: SYNB1618 Previously Presented D5 Phe Reduction: SYNB1934 Current Study N = 32 N = 88
Synthetic Biotic Medicines: a novel approach in Phenylketonuria (PKU) SYNB1618 strain achieved prespecified 20% Phe lowering target in PKU patients SYNB1934 strain demonstrated two-fold greater activity than SYNB1618 in healthy volunteers SYNB1934 Ph. 1 HV Synlogic intends to begin pivotal study planning and advance the best asset into Phase 3 in 2022
Enteric Hyperoxaluria (HOX) Enteric Hyperoxaluria results in significant, irreversible, and progressive kidney damage SYNB8802 proof of mechanism established: potential for best-in-class urinary oxalate lowering Proof of concept data expected 2022
The Enteric Hyperoxaluria Patient Experience Patients with underlying GI disorders faced with the burden of chronic and recurrent kidney stones High levels of pain No approved treatment options Risk of impaired kidney function Source: Patel et al, 2017; Synlogic market research “I would rather experience the pain of childbirth every year for the rest of my life than ever have one more stone.” - C., Female, 53 yrs. old, 7 stones 75,000 - 90,000 US patients with recurrent kidney stones have no available therapeutic options
Hyperoxaluria: Primary vs. Enteric Number of Patients Affected Primary Hyperoxaluria Enteric Hyperoxaluria Pathology Rare genetic condition Dietary oxalate hyperabsorption Onset Pediatric Adult Trigger Genetic liver enzyme deficiency Underlying insult to bowel: including IBD, bariatric surgery, other chronic GI conditions UOx. Levels 90 – 500 mg / 24 hrs (~10x normal) 45 – 130 mg / 24 hrs (~3x normal) U.S. Patients ~5,000 – 8,000 ~200,000 – 250,000 Key Players Clinical consequences Limited ability to manage with diet | Nephrocalcinosis | Recurrent, chronic kidney stones | Impaired renal function | Systemic Oxalosis
Oral therapy An innovative approach in an area of high unmet medical need Our approach Consume Oxalate in the GI Tract Reduce Oxalate in the urine Differentiation from other approaches Ph 1B Proof of Concept in Enteric Hyperoxaluria patients (Roux-en-Y population) initiated Consumes oxalate in each GI compartment, throughout GI tract
Absorbs oxalate throughout GI tract, esp. in colon Dietary Oxalate Stomach Small intestine Colon Oxalate absorption Healthy state Disease state Healthy people absorb ~10% of dietary oxalate, mostly via stomach and small intestine Patients absorb ~20-30% of dietary oxalate, through entire GI tract including colon Pathway Absorption Oral enzyme Oxalobacter formigenes Optimal treatment SYNB8802 consumes Oxalate throughout the GI tract ?
Ph1 design provides POC opportunity in 2021 Dietary hyperoxaluria model is translationally relevant to patient population Phase 1A Dietary Hyperoxaluria (Healthy Volunteers) Multiple Ascending Dose High oxalate & low calcium diet run-in Induce dietary hyperoxaluria N = 45 subjects Endpoints Primary: Safety & tolerability Secondary: Microbial kinetics of strain Exploratory: (1) Plasma and urine biomarkers (2) Dose frequency assessment Phase 1B Enteric Hyperoxaluria Patients Cross-over Enteric Hyperoxaluria patients (Roux-en-Y population) Three times/day (TID) dosing N = 20 patients, baseline UOx >50 mg/day Endpoints: Primary: Change in Urinary Oxalate Secondary: (1) Microbial kinetics of strain (2) Safety and tolerability
High oxalate diet successfully elevated UOx levels in HV Historically Uox in HV is <40 mg/24h. Examples: Langman 2018, (27 mg), Quintero 2020, (19.8mg), Captozyme 2018 (28 mg). Mean +/- SD shown. American diet contains approx. 200-250 mg oxalate/day HV subjects were given a high oxalate, low calcium diet (HOLC) during the diet run-in and treatment phases of the study HV subjects absorb approx. 10% of dietary oxalate Urinary oxalate levels elevated to >1.5X typically observed in healthy volunteers Dietary intake carefully measured on in-patient unit, incl. weighing of meals consumed Baseline Urinary Oxalate after HOLC diet Typical observed HV UOx
Dose-responsive and reproducible Uox lowering demonstrated Efficacy Analysis (% Change from Baseline in 24h UOx over Pbo) 600mg Daily Oxalate 400mg Daily Oxalate Lower is better Lower is better LS mean change over Placebo, +/- 90% CI, all days baseline and treated
SYNB8802 3e11 live cells dose advancing to Ph1B in patients LS mean change over Placebo, +/- 90% std error of mean, all days; and 24hr UOx after 5 days of dosing, +/- 90% std error of mean. 600mg daily oxalate. Change in UOx UOx Levels Clinically meaningful lowering of urinary oxalate demonstrated at a well tolerated dose Upper limit of normal
Opportunity for multiple clinically relevant outcomes in Phase1B Potential to demonstrate meaningful urinary oxalate lowering in patients with active disease Learning opportunities in Phase 1 SYNB8802 has established urinary oxalate lowering in Dietary Hyperoxaluria (HV) model Potential for urinary oxalate lowering in Enteric Hyperoxaluria population (Roux-en-Y) Degree of colonic activity of SYNB8802 and potential for less frequent dosing
SYNB8802 Summary: 3e11 live cells moving into patients SYNB8802 was generally well tolerated in healthy volunteers. No serious or systemic adverse events. Most frequent AEs mild or moderate, transient, and GI-related Dose responsive changes in urinary oxalate levels were observed with a significant reduction in urinary oxalate relative to placebo across three dose levels Baseline urinary oxalate reduction of 28.6% compared to placebo Mean 24-hour urinary oxalate level of 40.1 mg for subjects, compared to 58.1 mg for placebo, at the end of dosing 3e11 live cells dose will advance to patient studies
Synlogic continues to deliver meaningful data Robust portfolio with significant milestones over the next 18 months PKU Immuno-Oncology Ph1 Arm 2 combination read-out Enteric Hyperoxaluria SYNB8802 Ph1B proof of concept read-out H1 2022 2021 SYNB1891 SYNB1934 Ph2 SynPheny proof of concept read-out SYNB1618 Delivered SYNB1934 Head to Head data in HV SYNB1934 Delivered Ph1A study in HV read-out SYNB8802 Delivered H2 2022 Start of pivotal program SYNB1618 or SYNB1934
Balance Sheet (unaudited) 30 June 2021 31 December 2020 Cash, Cash Equivalents, and Marketable Securities $115.5 M $100.4 M Statement of Operations (unaudited) 30 June 2021 30 June 2020 R&D Expenses $10.7 M $12.9 M G&A Expenses $4.1 M $3.5 M Net Loss $(14.5 M) $(15.5 M) Net loss per share – basic and diluted* $(0.28) $(0.44) Weighted Average Shares Outstanding* 52.0 M 34.9 M Three Months Ended * weighted average shares used in computing net loss per shares - basic and diluted Second Quarter, 2021 Summary Results
Collaborators Board of Directors Experienced leadership team and Board Peter Barrett, Chair Atlas Venture Mike Burgess Turnstone Biologics Michael Heffernan Collegium Patricia Hurter Lyndra Therapeutics Lisa Kelly-Croswell Boston Medical Center Health System Nick Leschly Bluebird Bio Ed Mathers NEA Richard Shea Syndax Daniel Rosan Head of Finance & Investor Relations Dave Hava, PhD Chief Scientific Officer Aoife Brennan, MB ChB President & CEO Antoine Awad Chief Operating Officer Caroline Kurtz, PhD Chief Development Officer Leadership Team
Engineering Synthetic Biotic Medicines
Toxin Promoter Inducer Effector Biomarker Biomarker Reusable parts enable rapid iteration of rationally designed prototypes Non-pathogenic bacterial chassis Programable, controllable engineering Drug-like properties Does not colonize No in vivo reproduction or risk of genetic drift Inducer-Promoter Switch Effector Design Safety Features E. coli Nissle Synthetic Biotic Medicine A new class of medicines
Synthetic Biotic Platform accelerates pathway into the clinic Validated biology Unmet medical need Unique SYBX advantages Target selection Enabling Engine Internal GMP manufacturing Modular SynBio components Translational, clinical and regulatory Deep synthetic biology expertise Resulting portfolio Metabolic pipeline: Metabolite consumption in the GI tract Immunology pipeline: Potential for partnership Synthetic Biotic Platform
Synthetic Biotic Platform is enabling engine for drug development Rapid pipeline expansion possible with reusable engineering >200 humans dosed with Synthetic Biotic medicines 5 INDs opened with the U.S. FDA Supportive regulatory feedback from global agencies Safe chassis organism (>100 years of human experience) Internal process development and GMP manufacturing of live biotherapeutic Modular SynBio components enables rapid, iterative product development Translational, clinical and regulatory experience for live biotherapeutic medicine Deep synthetic biology expertise: Internal + Ginkgo Bioworks Synthetic Biotic Platform Synthetic Biotic Platform
Versatile platform enables diverse therapeutic strategies for range of diseases Pfnr Enzyme Metabolism Non-Toxic Toxic Metabolite Consumption Pfnr Production Payload Surface Display Effector Secretion Small molecule production Enzyme Pfnr Catalysis Payload Pfnr Production Processing Synthetic Biotic Platform
Toxin Promoter Inducer Effector Biomarker Biomarker Biomarker 2 P Component Library of parts Therapeutic strategy Metabolite consumption, small molecule production, effector secretion or surface display Bacterial Chassis Probiotic: Decades of human use & safety data Effector(s) Proteins for activity: Can generate biomarkers Pump Transports metabolites or proteins across cell membrane Switch Inducer-promoter pair: Controls gene expression Safety Features Auxotrophies: Prevents growth within or external to the body Reusable parts enable rapid iteration of rationally designed prototypes Effector 2
ΔdapA Hippuric Acid (HA) (TCA) LAAD P araC PAL3 P fnr Trans-cinnamic acid (TCA) Phe Phenylpyruvate (PP) Phe Phenyl-lactic Acid (PLA) PheP Phenylalanine (Phe) Component Design Therapeutic strategy Metabolite consumption: Built from Synthetic Library Specifically to Consume Phe Bacterial Chassis E. coli Nissle Effector(s) SYNB1618: Wild Type PAL3 Enzyme SYNB1934: Evolved PAL3 Enzyme Degrades Phe to TCA (measurable biomarker of activity) LAAD Enzyme: Alt. Phe-consuming pathway Pump PheP: Pumps Phe into cell Switch SYNB1618: FNR & AraC promoters SYNB1934: Ptac Control gene expression Safety Features Δ dap: Auxotrophy – requires diaminopimelic acid (DAP) to grow SYNB1618 & SYNB1934 Design
Ox/ formate Pump (OxLT) CoA+ ATP Ppi+ AMP OxdC FEC Formate Oxalate Oxalyl CoA Formyl CoA Oxalate Formate ΔthyA Component SYNB8802 Design Therapeutic strategy Metabolite consumption: Engineered to Convert Oxalate to Formate for the Treatment of Enteric Hyperoxaluria Bacterial Chassis E. coli Nissle Effector(s) OxdC and associated components: Catalyzes conversion of oxalate to formate Pump OxLT: Pumps oxalate in & formate out Switch FNR promoter: Inducer-promoter pair Safety Features Δ thyA: Controls growth SYNB8802 Design
Focus on Immuno-Oncology
Immuno-Oncology SYNB1891 potential for improved efficacy relative to other STING approaches SYNB1891 monotherapy demonstrated meaningful pharmacodynamic effects Phase 1 in combination with Tecentriq initiated: Data will be available in 2021
daC ΔthyA ΔdapA ATP + ATP Cyclic-di-AMP (STING Agonist) P fnr Component SYNB1981 Design Therapeutic strategy Small molecule production: Leveraging the ability of bacteria to interact with the immune system to turn a cold tumor hot Bacterial Chassis E. coli Nissle: Targeting to antigen presenting cells in the tumor microenvironment. Innate immune activation Effector(s) STING Agonist: Innate immune activator compounds with chassis effect Pump Not necessary Switch STING-agonist production restricted to hypoxic TME for sustained payload delivery Safety Features Dual auxotrophies inhibit bacterial proliferation outside of tumor SYNB1891 Design
Phase 1 design: multidose tolerability, IT mono and combo Arm 1: Monotherapy Cohorts Arm 2: Combination Cohorts - Atezolizumab Sentinel Patient Day 7 safety Eval Patient 2 & 3 Safety Evaluation Repeat for each cohort Arm 1 Cohort 4 Starting dose Arm 1 Cohort 3 level (1x107) Sentinel Patient Day 7 safety Eval Patient 2 & 3 Safety Evaluation Repeat for each cohort Recommended Ph2 Dose (RP2D) Enroll <20 patients at RP2D Proof of mechanism: exploratory biomarkers in advanced solid tumors or lymphomas PD response (tumor biopsy): TILs, IFN b, IFN dependent gene expression (Nanostring) Immunohistochemistry Kinetics of SYNB1891 (qPCR) Systemic PD effects (blood): Serum cytokines levels Kinetics of SYNB1891 (qPCR) Combination with PD-1 will identify Phase 2 dose, provide evidence of target engagement, safety, and support for target tumor type POM/Exploratory Biomarkers
SYNB1891 advanced into combo. therapy arm of Ph. 1 with Tecentriq SYNB1891 is safe and well-tolerated as an intratumoral injection with no dose limiting toxicities or infections to date Combination therapy data will be available in late 2021 Monotherapy dose escalation will continue in parallel to combination dose escalation of SYNB1891 with fixed dose of Atezolizumab (Tecentriq) SYNB1891 demonstrates meaningful pharmacodynamic effects including systemic cytokine responses observed in two subjects Evidence of durable stable disease was observed in two patients SYNB1891 demonstrates target engagement as assessed by upregulation of IFN-stimulated genes and T-cells
Exhibit 99.3
Synlogic Announces Positive Phase 2 Data Demonstrating Reduction in Plasma Phenylalanine Levels in Patients with Phenylketonuria
– SYNB1618 demonstrated proof of concept with meaningful reduction of plasma phenylalanine (Phe) levels in an interim analysis of the Phase 2 SynPheny-1 Study –
– SYNB1934, an optimized strain of SYNB1618, demonstrated two-fold increase in biomarkers of Phe metabolism compared to SYNB1618 –
– Phase 2 SynPheny-1 study will incorporate SYNB1934. Company to prepare to start Phase 3 program with the most promising strain in Phenylketonuria (PKU) in 2022 –
– Conference call and webcast to discuss results at 8:30 AM –
Cambridge, Mass., September 20, 2021 – Synlogic, Inc. (Nasdaq: SYBX), a clinical stage company bringing the transformative potential of synthetic biology to medicine, today announced positive data from clinical studies evaluating both SYNB1618 and SYNB1934, investigational Synthetic Biotic™ medicines for the treatment of phenylketonuria (PKU).
SYNB1618 demonstrated clinically meaningful reductions of phenylalanine (Phe) at several dose levels, across multiple time points, in an interim analysis of the Phase 2 SynPheny-1 study. SYNB1934, an optimized strain evolved from SYNB1618, demonstrated two-fold higher activity than SYNB1618 in a head-to-head Phase 1 study in healthy volunteers, as measured by biomarkers of Phe metabolism.
Synlogic intends to incorporate SYNB1934 into an arm of the Phase 2 SynPheny-1 trial with final results expected in the first half of 2022. Based on the favorable clinical data from the SYNB1618 and SYNB1934 programs available to date, the Company intends to initiate planning for a pivotal Phase 3 study for the most promising strain.
“The PKU program demonstrated clear proof of concept in this analysis, with SYNB1618 achieving a clinically meaningful reduction of phenylalanine in patients across multiple endpoints and time points,” said Aoife Brennan, M.B. Ch.B., Synlogic’s President and Chief Executive Officer. “Additionally, our second PKU candidate SYNB1934 provides greater potency, which will allow us to optimize the clinical profile to address the profound needs of patients with PKU.”
“Together, these data provide strong support for the ability of Synthetic Biotic medicines to make a meaningful difference to patients. These events mark a major milestone for Synlogic’s Synthetic Biotic platform. We look forward to completing our Phase 2 SynPheny-1 study and advancing the PKU program into a pivotal study,” continued Dr. Brennan.
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“In addition to our strong clinical results, we’re highly encouraged by the predictive validity of our prospective biomarker driven modeling of therapeutic effect,” said David Hava, Ph.D., Chief Scientific Officer. “Patient clinical data observed to date was consistent with our preclinical predictions of Phe metabolism by the strains. The ability to translationally model clinical activity enables rapid and effective strain optimization, which we have applied both to PKU and other inherited and acquired metabolic disorders.”
Interim SYNB1618 Synpheny-1 Phase 2 Results
Synpheny-1 (NCT04534842) is an open-label, single arm Phase 2 study in patients with PKU. The study evaluated a dose-ramp regimen consisting of four dose levels of SYNB1618 over 15 days of treatment. The primary endpoint was reduction of the area under the curve (AUC) for plasma D5-phenylalanine (D5-Phe) after a meal challenge. Secondary endpoints include changes from baseline in fasting levels of plasma Phe at multiple timepoints, and incidence of treatment-emergent adverse events (TEAEs). Dietary intake of Phe was carefully managed during the study through individualized diet management plans.
The interim analysis included 8 patients. Clinical results demonstrated meaningful reductions of Phe, consistent with prospective biomarker-driven modeling. These results included:
| • | 20% reduction in fasting plasma Phe after 14 days of dosing, at a dose of 1e12 live cells; |
| • | Fasting plasma Phe level began to trend down after seven days of dose titration, at a dose up to 3e11 live cells, and was statistically significant at the 1e12 dose at day 14 |
| • | 40% reduction in labeled plasma D5-Phe after meal challenge at day 15, at a dose of 2e12 live cells; and |
| • | Rebound of plasma Phe levels following cessation of dosing, confirming therapeutic effect |
Safety and tolerability were consistent with prior studies, with no serious adverse events or systemic events of any kind. AEs were primarily GI related and mild to moderate in nature. There were no treatment drug related discontinuations.
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SYNB1934 Phase 1 Results
SYNB1934 was evolved from SYNB1618 to potentially provide increased Phe lowering activity for patients living with PKU. Clinical studies of SYNB1934 were initiated following preclinical in vivo and in vitro studies demonstrating an approximately two-fold improvement in the ability of SYNB1934 to break down Phe compared to SYNB1618.
The Phase 1 multiple ascending dose study of SYNB1934 (NCT04984525) evaluated the safety, tolerability and Phe consumption activity of SYNB1934, including a head-to-head comparison with SYNB1618 in healthy volunteers using biomarkers of Phe consumption such as trans-cinnamic acid (TCA). Results included:
| • | Dose dependent increase in plasma TCA area under the curve; |
| • | Two-fold higher activity level than SYNB1618 in a head-to-head comparison based on biomarkers of Phe consumption |
| • | Safety and tolerability in cohorts 1 – 3 were similar to other Synthetic Biotic medicines, including SYNB1618, at equivalent doses. The most common adverse events were GI-related, mild to moderate in severity, and some events led to discontinuation of dosing |
| • | Dosing continues in the dose escalation portion of the study and the maximum tolerated dose has not been reached |
SYNB1934 clinical results were consistent with preclinical data and previously presented prospective biomarker driven modeling. The Company believes that the increased activity of SYNB1934, relative to SYNB1618, could provide the opportunity to optimize the clinical profile based on individual patient needs.
Next Steps
Synlogic intends to complete the SynPheny-1 study with a cohort of patients receiving SYNB1934 and anticipates final SynPheny-1 results in the first half of 2022.
Based on the clinical data from the SYNB1618 and SYNB1934 programs available to date, the Company intends to initiate planning for a pivotal Phase 3 study of the most promising strain.
Synlogic continues to evaluate Synthetic Biotic medicines for other metabolic diseases such as Enteric Hyperoxaluria, including development of predictive efficacy models. Preclinical and Phase 1A data suggest SYNB8802 has the potential to consume clinically meaningful levels of dietary oxalate in patients with disease. The Company is continuing to enroll Part B of the Phase 1 study of SYNB8802 and due to ongoing challenges presented by the COVID-19 pandemic, anticipates study data will be available in the first half of 2022.
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Synlogic continues to advance preclinical programs targeting additional inherited and acquired metabolic indications. The company expects to file an IND for an additional metabolic indication in 2022.
Patients can learn more about the SynPheny-1 study (NCT04534842) by visiting https://pkuresearchstudy.com. More information about Synlogic’s programs and pipeline can be found at https://www.synlogictx.com.
Conference Call & Webcast Information
Synlogic will host a conference call and live webcast at 8:30 a.m. ET today, Monday, September 20, 2021. To access the live webcast, please visit the “Event Calendar” page within the Investors and Media section of the Synlogic website. Investors may listen to the call by dialing +1 (844) 815-2882 from locations in the United States or +1 (213) 660-0926 from outside the United States. The conference ID number is 1154745. A replay will be available for 30 days on the Investors and Media section of the Synlogic website.
About Phenylketonuria
Phenylketonuria (PKU) is an inherited metabolic disease that manifests at birth and is marked by an inability to break down Phe, an amino acid commonly found in many foods. Left untreated, high levels of Phe become toxic and can lead to serious neurological and neuropsychological problems affecting the way a person thinks, feels, and acts. Due to the seriousness of these symptoms, infants are screened at birth in many countries to ensure early diagnosis and treatment to avoid intellectual disability and other complications.
About Synlogic
Synlogic™ is bringing the transformative potential of synthetic biology to medicine. With a premiere synthetic biology platform that leverages a reproducible, modular approach to microbial engineering, Synlogic designs Synthetic Biotic medicines that target validated underlying biology to treat disease in new ways. Synlogic’s proprietary pipeline includes Synthetic Biotics for the treatment of metabolic disorders including Phenylketonuria (PKU) and Enteric Hyperoxaluria. The company is also building a portfolio of partner-able assets in immunology and oncology.
Forward-Looking Statements
This press release contains “forward-looking statements” that involve substantial risks and uncertainties for purposes of the safe harbor provided by the Private Securities Litigation Reform Act of 1995. All statements, other than statements of historical facts, included in this
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press release regarding strategy, future operations, clinical development plans, future financial position, future revenue, projected expenses, prospects, plans and objectives of management are forward-looking statements. In addition, when or if used in this press release, the words “may,” “could,” “should,” “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan,” “predict” and similar expressions and their variants, as they relate to Synlogic may identify forward-looking statements. Examples of forward-looking statements, include, but are not limited to, statements regarding the potential of Synlogic’s platform to develop therapeutics to address a wide range of diseases including: cancer, inborn errors of metabolism, metabolic diseases, and inflammatory and immune disorders; the future clinical development of Synthetic Biotic medicines; the approach Synlogic is taking to discover and develop novel therapeutics using synthetic biology; the expected timing of Synlogic’s clinical trials and availability of clinical trial data. Actual results could differ materially from those contained in any forward-looking statement as a result of various factors, including: the uncertainties inherent in the clinical and preclinical development process; the ability of Synlogic to protect its intellectual property rights; and legislative, regulatory, political and economic developments, as well as those risks identified under the heading “Risk Factors” in Synlogic’s filings with the Securities and Exchange Commission. The forward-looking statements contained in this press release reflect Synlogic’s current views with respect to future events. Synlogic anticipates that subsequent events and developments could cause its views to change. However, while Synlogic may elect to update these forward-looking statements in the future, Synlogic specifically disclaims any obligation to do so. These forward-looking statements should not be relied upon as representing Synlogic’s view as of any date subsequent to the date hereof.
| MEDIA CONTACT: | INVESTOR CONTACT: | |
| Daniel Rosan Synlogic, Inc. Phone: 617-401-9152 Email: dan.rosan@synlogictx.com |
Daniel Rosan Synlogic, Inc. Phone: 617-401-9152 Email: dan.rosan@synlogictx.com | |
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