Full Press Release Details
Seres Therapeutics Reports First Quarter 2023 Financial Results and Provides Business Updates
VOWSTTM microbiota-based therapeutic approved for prevention of recurrence of C.
difficile infection in adults following antibacterial treatment for recurrent CDI; product availability expected in June
New SER-155 Phase 1b Cohort 1 clinical data show favorable tolerability, successful drug
bacteria engraftment and a significant reduction in pathogen domination in the gastrointestinal microbiome; Cohort 2 data readout anticipated in mid-2024
Strengthened balance sheet with up to $250 million debt facility with Oaktree, Seres received $110 million upon agreement
closing; Seres to receive $125 million milestone payment from Nestl Health Science related to VOWST approval
Conference call at 8:30 a.m. ET today
CAMBRIDGE, Mass., May 9, 2023 Seres Therapeutics, Inc. (Nasdaq: MCRB), a leading microbiome therapeutics
company, today reported first quarter 2023 financial results and provided business updates.
We were thrilled to recently announce the FDA
approval of VOWST, the first and only FDA-approved orally administered microbiota-based therapeutic, and with the favorable label indication received from the FDA. Adult recurrent C. difficile infection
patients who could benefit from using VOWST, per the label, can access it, including those with first recurrence. The approval of VOWST marks Seres transformation to a commercial organization and provides definitive validation of the promise
of our microbiome technology platform, said Eric Shaff, President and Chief Executive Officer at Seres. We are looking forward to launching VOWST in the United States in June alongside our collaborator, Nestl Health Science.
We also continue to advance our earlier-stage pipeline, including SER-155, designed to prevent infections and/or
graft-versus-host disease in patients undergoing allogeneic hematopoietic stem cell transplant, or allo-HSCT. We are also very pleased to report today new Phase 1b data from study Cohort 1 that support our therapeutic objective of reducing serious
enteric infections, resulting bloodstream infections and GvHD. These encouraging initial data support the continued development in the ongoing placebo-controlled study Cohort 2.
Finally, we have substantially strengthened our balance sheet and expect to further enhance our cash
position with the receipt of a $125 million milestone payment from Nestl based on the FDA approval.
First Quarter and Recent
Program and Corporate Updates
FDA Approval of VOWST: In April 2023, Seres and Nestl Health Science announced the Food and Drug
Administration (FDA) approval of VOWST (fecal microbiota spores, live-brpk), formerly called SER-109, an orally administered microbiota-based therapeutic to prevent recurrence of C. difficile Infection
(CDI) in adults following antibacterial treatment for recurrent CDI (rCDI). VOWST is thought to facilitate restoration of the gut microbiome. The Company anticipates VOWST product availability and launch in June.
The FDA approval of VOWST was supported by a robust Phase 3 development program that included the ECOSPOR III and ECOSPOR IV studies. VOWST was previously
granted Breakthrough Therapy and Orphan Drug Designations by the FDA.
ECOSPOR III was a multicenter, randomized, placebo-controlled study in individuals
with rCDI, the results of which were published in the New England Journal of Medicine. The study s primary objective was to demonstrate the reduction of CDI recurrence with VOWST. In ECOSPOR III, VOWST was shown to reduce CDI
recurrence at eight weeks, with approximately 88% of individuals recurrence-free at eight weeks post-treatment, compared to 60% in participants who received placebo. In addition, at six months post-treatment, 79% of the VOWST group were demonstrated
to be recurrence-free, compared to 53% in the placebo group. No treatment-related serious adverse events were observed in the active arm and the frequency of treatment-related adverse events was similar between the VOWST and placebo arms. The most
common adverse reactions through eight weeks in VOWST treated participants versus placebo were solicited events of abdominal distention (31.1% VOWST versus 29.3% placebo), fatigue (22.2% VOWST versus 21.7% placebo), constipation (14.4% VOWST versus
10.9% placebo), chills (11.1% versus 7.6% placebo), and unsolicited event of diarrhea (10.0% versus 4.3% placebo).
ECOSPOR IV was an open-label, single
arm study evaluating VOWST in 263 adult participants with rCDI. Study results were published in the JAMA Network Open. The ECOSPOR IV study results contributed to the VOWST safety database and supported product approval.
Seres and Nestl Health Science are committed to helping appropriate patients who have been prescribed VOWST obtain access. Additional details about
VOWST access programs will be available at launch. Please see vowst.com for further information.
In July 2021, Seres and Nestl Health Science
entered into an agreement to jointly commercialize VOWST in the U.S. and Canada. Nestl Health Science is leveraging its global pharmaceutical business and assuming the role of lead commercialization party, including the utilization of its
existing infrastructure, 150-person gastrointestinal sales force, payer access team and a recently hired 20-person hospital salesforce.
New SER-155 Phase 1b Cohort 1 Study Results: In a separate
press release issued today, Seres announced new safety and pharmacology study data including:
SER-155 is an investigational, oral, 16 strain, cultivated microbiome therapeutic designed to prevent colonization and reduce the abundance of ESKAPE
pathogens (e.g., from families such as Enterococcaceae, Enterobacteriaceae, Streptococcaceae, Staphylococcaceae) in the GI tract to reduce the risk of enteric driven bloodstream infections and other downstream consequences such as GvHD in
patients receiving allo-HSCT. SER-155 has the potential to also impact antimicrobial resistance (AMR), including infections caused by carbapenem-resistant Enterobacteriaceae (CRE) and vancomycin-resistant
Enterococci (VRE). The development of SER-155 is supported by SER-109 Phase 3 ECOSPOR III study exploratory results showing the decolonization of gut pathogens,
including bacterial carrying antibiotic resistance genes, in the GI microbiome following SER-109 administration.
The ongoing SER-155 Phase 1b study includes two cohorts with Cohort 1 designed to assess safety and drug pharmacology,
including the engraftment of drug bacteria in the gastrointestinal tract.
Enrollment of the Cohort 2 study is ongoing, incorporating a randomized,
double-blinded placebo-controlled design to further evaluate safety and engraftment, as well as clinical outcomes, and will enroll approximately 60 subjects administered either SER-155 or placebo at a 1:1
ratio. The Company anticipates obtaining Cohort 2 study data in mid-2024.
Infection Protection research:
The Company continues to conduct research to bring forward new microbiome therapeutics as a novel approach for Infection Protection for medically compromised individuals, including those with cancer neutropenia, cirrhosis or solid organ
transplant. Preclinical studies are evaluating the potential to reduce the abundance of targeted pathogens to decrease the potential for pathogen transmission, strengthen epithelial barriers to further reduce translocation and the frequency of
bloodstream infections, and to modulate immune responses to tackle medical complications such as graft-versus-host disease (GvHD). The Company plans to announce an additional Infection Protection clinical development program in 2023.
Ulcerative Colitis (UC) research: The Company previously reported clinical, microbiome and metabolomic data from the
SER-287 Phase 2b study and the first cohort of its SER-301 Phase 1b study. Available data for these investigational microbiome therapeutics suggest that there may be an
opportunity to utilize biomarker-based patient selection and stratification for future studies. Research activities remain ongoing to inform potential further development activities.
Seres reported a net loss of $71.2 million for the first quarter of 2023, as compared with a net loss of $56.6 million for the same period
Research and development expenses for the first quarter of 2023 were $44.0 million, compared with $39.6 million for the same
period in 2022. The research and development expenses were primarily related to Seres VOWST clinical development program and manufacturing costs, as well as personnel expenses. Included in the first quarter 2023 R&D expenses of
$44 million is approximately $16 million of commercial manufacturing costs for VOWST. Following the approval of VOWST, R&D expenses in the P&L will no longer include VOWST commercial manufacturing costs, as these costs will be
capitalized and recognized on Seres balance sheet.
General and administrative expenses for the first quarter of 2023 were $22.5 million,
compared with $18.6 million for the same period in 2022. General and administrative expenses were primarily related to personnel expenses, professional fees, including VOWST commercial readiness and
pre-launch expenses, and facility costs.
The Company has expanded its capabilities across the organization in
support of VOWST approval and launch and is focused on driving operational efficiencies and pursuing opportunities to optimize its cost structure.
ended the first quarter of 2023 with $106.5 million in cash, cash equivalents and investments as compared with $181.3 million at the end of 2022.
In April 2023, Seres announced that it had entered into a new $250 million senior secured debt facility provided by funds managed by Oaktree Capital
Management, L.P. The Company drew the first tranche of $110 million at closing, with three additional tranches available. These additional tranches include $90 million that will be available in two tranches of $45 million each based
upon the achievement of certain applicable VOWST sales targets, and an additional $50 million will be available to the Company at Oaktree s discretion to support potential future business development activities. Of the $110 million
advanced by Oaktree at closing, approximately $53 million retires outstanding debt, and after deducting fees and expenses, the net proceeds to the Company were approximately $50 million.
Seres is also due to receive a $125 million milestone payment from Nestl Health Science associated with the FDA approval of VOWST. The Company
also anticipates the receipt of proceeds from the supply of VOWST initial inventory to Nestl .
pro-forma cash balance as of March 31, 2023, is approximately $282 million, including the VOWST approval milestone and the net proceeds from its debt financing with Oaktree.
Conference Call Information
Seres management will
host a conference call today, May 9, 2023, at 8:30 a.m. ET. To access the conference call, please dial 800-715-9871 (domestic) or 646-307-1963 (international) and reference Conference ID 5098595. To join the live webcast, please visit the Investors and News section of the Seres website at www.serestherapeutics.com.
A webcast replay will be available on the Seres website beginning approximately two hours after the event and will be archived for at least 21 days.
INDICATION AND IMPORTANT SAFETY INFORMATION FOR VOWST
VOWST is indicated to prevent the recurrence
of Clostridioides difficile infection (CDI) in individuals 18 years of age and older following antibacterial treatment for recurrent CDI (rCDI).
Limitation of Use: VOWST is not indicated for treatment of CDI.
IMPORTANT SAFETY INFORMATION
WARNINGS AND PRECAUTIONS
Transmissible infectious agents: Because VOWST is manufactured from human fecal matter, it may carry a risk of transmitting infectious
agents. Report any infection that is suspected to have been transmitted by VOWST to Aimmune Therapeutics, Inc. at
presence of food allergens: VOWST may contain food allergens. The potential to cause adverse reactions due to food allergens is unknown.
The most common adverse reactions
(reported in 5% of participants) were abdominal distension (31.1%), fatigue (22.2%), constipation (14.4%), chills (11.1%), and diarrhea (10.0%).
To report SUSPECTED ADVERSE REACTIONS, contact Aimmune Therapeutics at 1-833-AIM-2KNO (1-833-246-2566), or the FDA at 1-800-FDA-1088, or visit www.fda.gov/MedWatch.
Do not administer antibacterials concurrently with VOWST.
Please see Full Prescribing Information and Patient Information
About Seres Therapeutics
Seres Therapeutics, Inc.
(Nasdaq: MCRB) is a commercial-stage company developing novel microbiome therapeutics for serious diseases. Seres lead program, VOWSTTM, obtained U.S. FDA approval in April 2023 as the first
orally administered microbiota-based therapeutic to prevent recurrence of C. difficile infection (CDI) in adults following antibacterial treatment for recurrent CDI and is being commercialized in collaboration with Nestl Health
Science. Seres is evaluating SER-155 in a Phase 1b study in patients receiving allogeneic hematopoietic stem cell transplantation to reduce incidences of gastrointestinal infections, bloodstream infections and
graft-versus-host disease as well as additional preclinical stage programs targeting Infection Protection in medically compromised patients. The Company is also conducting research to inform further development of microbiome therapeutics for