Sernova Receives Authorization to Enroll Second Patient Cohort of Phase 1/2 Trial with Cell Pouch System™ for Type 1 Diabetes
- Sernova plans to begin enrollment of second cohort in the coming weeks and implant multiple patients with the enhanced capacity 10-channel Cell Pouch before the end of 2022
- Positive interim results from patients in the first cohort informed the islet dose and density threshold optimizations for the second cohort
- Expedited enrollment is anticipated with Sernova’s engagement of an experienced clinical trial patient recruitment agency and the Company expects to report interim data in 2023
- Results from the combined cohorts will help guide the design of Sernova’s pivotal study, which would support an anticipated BLA submission to the US FDA and accelerate our iPSC stem cells into the clinic
LONDON, Ontario, Nov. 03, 2022 (GLOBE NEWSWIRE) -- Sernova Corp. (TSX:SVA) (OTCQB:SEOVF) (FSE/XETRA:PSH), a clinical-stage company and leader in cell therapeutics, is pleased to announce, in conjunction with the advancement of its ongoing Phase 1/2 clinical trial of the Sernova Cell Pouch System™ for patients with type 1 diabetes (T1D) who suffer from hypoglycemia unawareness (the “T1D Study”), the approval of a protocol amendment by the University of Chicago Institutional Review Board (IRB) and no objections from FDA, allowing the Company to proceed with a strategically optimized protocol reducing the time required for patient treatment while accelerating potential secondary endpoint efficacy achievement with more optimal dosing.
Following promising interim results from the first six patients of Sernova’s active T1D Study, the protocol amendment enables the testing of a small second cohort of up to seven patients, to evaluate the Company’s optimized 10-channel Cell Pouch, which provides 50% more islet capacity compared to the 8-channel Cell Pouch used to date for the T1D Study. Study data from the first six patients formed the basis for the amended optimized treatment plan for the additional new cohort of patients. Results from the combined cohorts will help guide the design of Sernova’s pivotal study, supporting an anticipated BLA submission to the US FDA.
With the protocol amendment, enrollment of the first cohort of patients has concluded and patient enrollment for the new second cohort will begin. The first three patients of the first cohort with completed islet transplants have achieved insulin independence and the remaining three are progressing towards completion of the treatment regimen. Data from these first patients has enabled Sernova to determine dose thresholds and islet concentrations intended to optimize endogenous insulin production in treated patients. Furthermore, safety observations to date support reducing the time between Cell Pouch islet transplants from 180 to 90 days, which substantially reduces the overall treatment period in the amended protocol update. To expedite rapid enrollment of the second cohort, Sernova has engaged a clinical trial patient recruitment partner with extensive experience and success in accelerating T1D clinical trial patient enrollment.
“Sernova is committed to developing a potential ‘functional cure’ with the goal of freeing patients from the life-limiting burdens of T1D and dramatically enhancing their quality of life,” said Dr. Philip Toleikis, President and Chief Executive Officer. “We are pleased with the positive interim results demonstrating that the Cell Pouch System is well tolerated, reduces or eliminates the frequency of severe hypoglycemic events and continues to contribute to durable insulin independence among patients. Based on our now expanded recruitment activities and efforts, we anticipate implanting multiple patients before the end of 2022. The results from these additional patients will directly contribute to our pivotal T1D trial design and help accelerate entry into the clinic with our iPSC stem cell derived islet technology in conjunction with our Evotec partnership that is progressing ahead of our expectations.”
ABOUT PHASE 1/2 STUDY SECOND COHORT
The Phase 1/2 study (NCT03513939) is an open-label single-arm trial to assess the safety, tolerability, and efficacy of Sernova’s Cell Pouch System for clinical transplantation of human donor islets in patients with T1D. Six patients were transplanted in the first cohort utilizing the 8-channel Cell Pouch System and interim data have been previously reported by Dr. Witkowski and his colleagues. With the expansion into the second cohort utilizing the 10-channel Cell Pouch System, patient eligibility criteria remain unchanged and includes those aged 18-65 with T1D who suffer from both hypoglycemic unawareness and severe hypoglycemic episodes, and who are eligible for donor islet transplantation. Eligible trial patients have had at least one episode of severe hypoglycemia in the previous 12 months and an absence of stimulated C-peptide (a marker of insulin production by the body) in response to a mixed meal tolerance test.
Islets are transplanted into the Cell Pouch approximately six weeks after Cell Pouch implantation to allow development of fully vascularized native tissue chambers and achieve a stable immunosuppressant regimen. At 90 days post-islet transplant, safety and efficacy are assessed prior to initiating a second transplant of islets. At 90 days following each patient’s second islet transplant to Cell Pouch, safety and efficacy endpoints are evaluated again. Trial patients who remain dependent on insulin for at least 6 months following the second islet transplant to Cell Pouch may be eligible for a third supplemental islet transplant via the portal vein.
Patients who elect to retain their implants will be followed for up to 3 years after the final islet transplant to Cell Pouch. Multiple transplanted patients from the first cohort have implant durations of more than 3 years and none have elected to have their Cell Pouch implants removed.
The primary objective of the Phase 1/2 study is safety and tolerability. Secondary objectives include the following efficacy endpoints: production of C-peptide, insulin use, HbA1c, and frequency of hypoglycemic events.
ABOUT SERNOVA CORP. AND THE CELL POUCH SYSTEM PLATFORM FOR CELL THERAPY
Sernova Corp. is a clinical-stage biotechnology company that is developing regenerative therapeutic cell technologies for chronic diseases, including insulin-dependent diabetes, thyroid disease, and blood disorders that include hemophilia A. Sernova is currently focused on developing a ‘functional cure’ for insulin-dependent diabetes with its lead asset, the Cell Pouch System, a novel implantable and scalable medical device with immune protected therapeutic cells. On implantation, The Cell Pouch™ forms a natural vascularized tissue environment in the body for long-term survival and function of therapeutic cells that release essential factors that are absent or deficient in the bodies of patients with certain chronic diseases. Sernova’s Cell Pouch System has demonstrated its potential to be a ‘functional cure’ for people with T1D in an ongoing Phase 1/2 clinical study at the University of Chicago. Sernova is also advancing a proprietary technology in collaboration with the University of Miami to shield therapeutic cells from immune system attack with the goal to eliminate the need for chronic, systemic immunosuppression. In May 2022, Sernova and Evotec entered into a global strategic partnership to develop an implantable off-the-shelf iPSC-based (induced pluripotent stem cells) islet replacement therapy. This partnership provides Sernova a potentially unlimited supply of insulin-producing cells to treat millions of patients with insulin-dependent diabetes (type 1 and type 2). Sernova continues to progress two additional development programs that utilize its Cell Pouch System: An implantable cell therapy for benign thyroid disease resulting from thyroid gland removal; and an ex-vivo lentiviral Factor VIII gene therapy for hemophilia A.
FOR FURTHER INFORMATION, PLEASE CONTACT:
VP, Investor Relations
|Corey Davis, Ph.D.
LifeSci Advisors, LLC
|Elizabeth Miller, M.D.
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