Oncology peptide coverage on Peptide News Digest spans peptide-drug conjugates (Bicycle Therapeutics, Avacta, Lirum), peptide cancer vaccines (autogene cevumeran, ELI-002, EVX-01, GLSI-100), macrocyclic peptides for undruggable targets (Circle Pharma's CID-078), peptide receptor radionuclide therapy (Lutathera, Pluvicto), and the early-stage AI-discovered peptide work in cancer.
The AACR 2026 conference produced the highest concentration of new readouts on this site. Notable threads: BT5528 in EphA2 solid tumors, CID-078 in RB1-deficient tumors, multiple peptide-vaccine readouts, and Verismo's KIR-CAR program.
Stories here cover trial readouts, AACR and ASCO presentations, and partnership deals. See #cancer for the broader thread and the named indication tags (#breast-cancer, #pancreatic-cancer, #melanoma) for narrower scopes.
ResearchAndMarkets published an April 21 PDC market landscape report counting six peptide-drug conjugates currently in Phase III trials and approximately 96 in development across the global pipeline. Lutathera remains the only FDA-approved PDC after Pepaxto's withdrawal, though Pepaxto retains EMA and MHRA approval. The report flags 34% year-over-year growth in clinical-trial registrations for peptide-based oncology compounds, with the majority targeting solid tumors previously considered peptide-resistant. Phase 2 ADC peptide-linker data released in early 2026 shows tumor-specific payload delivery rates above 85% — nearly double the 2023 benchmark — driven by the proteolytic-stability work that lets linker peptides survive serum peptidase degradation long enough to reach solid tumors.
Pfizer announced that data from more than 40 company-sponsored, investigator-sponsored, and collaborative research abstracts will appear at ASCO 2026 in Chicago (May 29–June 2). The slate spans Pfizer's diverse oncology pipeline including peptide-drug conjugate programs, bispecific T-cell engagers, and antibody-drug conjugates. Combined with previously announced ASCO 2026 acceptances from Bicycle Therapeutics, BriaCell, Greenwich LifeSciences, BioVaxys, and Immutep, the meeting is shaping up as the most peptide-and-immuno-conjugate-heavy ASCO in recent memory — building on the foundation laid at AACR 2026 in San Diego.
The AACR Annual Meeting 2026 concluded April 22 in San Diego after six days featuring unprecedented peptide-oncology visibility. Macrocyclic peptide drug conjugate (PDC) pipelines across Circle Pharma, Bicycle Therapeutics, Oncopeptides, and SignaBlok drew regulatory and venture attention; peptide-targeting radioligand data from Perspective Therapeutics, Bicycle, and AlphaGen signaled maturation of the peptide-radioconjugate subcategory. AACR Advances sessions throughout the meeting featured targeted protein degradation and novel tumor-selective modalities, with peptide-based approaches competing directly with antibody drug conjugates in Phase 1/2 readouts.
The American Association for Cancer Research (AACR) Annual Meeting 2026 opens April 17 at the San Diego Convention Center, running through April 22 with 9,500+ sessions, 575 clinical abstracts, 56 clinical trial plenary talks, and 393 late-breaking posters. Multiple peptide biotechs — including Bicycle Therapeutics, Circle Pharma, SignaBlok, and Oncolytics Biotech — are presenting new clinical and preclinical data on macrocyclic peptides, bicyclic peptide drug conjugates, and peptide-based immunotherapies.
A comprehensive review in Journal of Nanobiotechnology positions peptide-drug conjugates (PDCs) as the next evolution beyond antibody-drug conjugates (ADCs) for targeted cancer therapy. Six PDCs are now in Phase III clinical trials with approximately 96 in development, offering advantages in tissue penetration, lower immunotoxicity, and more accessible manufacturing than ADCs.