Juan C. Osorio MD
juanosoriomd.bsky.social
Juan C. Osorio MD
@juanosoriomd.bsky.social
Assist Attending & Medical oncologist MSKCC & Rockefeller University | Antibody biology | Cancer immunology | GMO, GU | @MSK, @WeillCornellMed @BWH @UNAL | 🇨🇴🏳️‍🌈

https://www.mskcc.org/research-areas/labs/juan-osorio
Thanks Jia!
August 16, 2025 at 1:25 AM
This first study has sparked several ongoing phase-2 studies nationwide (glioblastoma, bladder and prostate cancer). Early data from these studies look promising, we look forward to reporting this! Incredibly grateful to the patients, families, philanthropic/federal support to make this possible
August 15, 2025 at 1:51 PM
Preclinical work by Polina Weitzenfeld confirmed that 2142-V11 induces TLS formation across tumor models & drives antitumor responses even without lymph node trafficking, opening tons of mechanistic questions about TLS function, IT delivery and exciting avenues for subsequent combination approaches!
August 15, 2025 at 1:50 PM
Another unexpected discovery was that IT 2141-V11 not only was safe but appear to trigger tertiary lymphoid structures (TLS) formation. These findings not only supports intratumoral administration as a safe approach but also the most effective way to promote optimal immune activation/interactions
August 15, 2025 at 1:50 PM
Led by David Knorr, our phase trial (12 pts) showed that IT 2141-V11 was safe, and in two patients, led to sustained CR in both injected and distant, non-injected lesions, validating over a decade of preclinical findings using our humanized mouse models!
August 15, 2025 at 1:50 PM
CD40 agonists have shown promise but failed due to toxicity and weak activity. We previously showed that 2141-V11, Fc-engineered for increased FcγRIIB binding, leads to superior antitumor activity and reduced toxicity when given intratumorally in preclinical models, paving the way for this trial.
August 15, 2025 at 1:50 PM
Same here… submitted in February 2024. Council met in September. Still waiting…
March 6, 2025 at 2:23 AM
Same here, under my RFA only 3 awarded for FY25, all done from 1/16 to 1/30. Nothing after Feb 1st…
February 28, 2025 at 5:21 PM
Great point, just looked! Will see if numbers of new awards start coming up in the following days 🙏🏻
February 28, 2025 at 2:48 AM
I am exactly on the same boat, still waiting, despite these transient pauses and hearing that some people are getting NOAs I also have not heard a word…frustrating is a kind way to describe the feeling…
February 28, 2025 at 1:40 AM