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Pharma Tech Outlook | Tuesday, February 08, 2022
Phase I study shows that mRNA-based individualised neoantigen-specific immunotherapy (iNeST) vaccines can be used to stimulate T cells to recognise neoantigens in pancreatic cancer patients.
FREMONT, CA: The mRNA-based individualised neoantigen-specific immunotherapy (iNeST) autogene cevumeran (also known as BNT122, RO7198457) in combination with the anti-PD-L1 immune checkpoint inhibitor atezolizumab and chemotherapy in patients with resected pancreatic ductal adenocarcinoma has been evaluated for safety and tolerability in a first-in-human Phase I study initiated by the investigator (PDAC). The procedure of profiling each patient's tumour to guide personalised vaccine creation and on-demand production of iNeST in a therapeutically appropriate period was demonstrated to be feasible. The initial findings revealed a favourable safety profile as well as positive indicators of therapeutic efficacy. The leading candidate from BioNTech's iNeST platform, which is being cooperatively developed with Genentech, a member of the Roche Group, for a variety of solid tumour indications, is autogene cevumeran.
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19 patients who underwent surgery and were given atezolizumab are included in the data. At 9.4 weeks following surgery, 16 of these patients (84 per cent) received autogene cevumeran. These 16 vaccine recipients' preliminary data readouts showed that autogene cevumeran and atezolizumab were well-tolerated together. There was no further Grade 3 or higher adverse effects identified; just one patient out of 16 (six per cent) experienced a Grade 3 fever and hypertension as a result of the vaccination. Additionally, in half of these individuals, the treatment generated a de-novo, neoantigen-specific T cell response, ranging from low levels to significant proportions of all blood T cells. The recurrence-free survival (RFS) was considerably longer in the eight patients with a de-novo immune response than in the eight patients without vaccine-induced immune responses at an early median follow-up of 18 months. The efficacy and safety of autogene cevumeran in combination with atezolizumab and chemotherapy in patients with resected PDAC are being further assessed in randomised research that BioNTech and Genentech are preparing based on these data.
The investigator-initiated, single-centre Phase I trial (NCT04161755) was created to assess the effectiveness of treating patients with resected PDACs with the companies' individualised immunotherapy candidate autogene cevumeran in combination with the anti-PDL-1 immune checkpoint inhibitor atezolizumab. The study's main goal is to evaluate safety. The treatment's effectiveness, as determined by the 18-month RFS, immunogenicity, and the practicability of the treatment plan are secondary goals.
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