# Moderna Cancer Vaccine Data Leak

> Moderna's cancer vaccine data leak reveals mixed results for melanoma treatment.
- Title: Moderna Cancer Vaccine Data Leak · Seekingalpha | Shortify
- Summary: Moderna's cancer vaccine data leak reveals mixed results for melanoma treatment. Moderna's personalized cancer vaccine shows 42% reduced recurrence risk but…
- Keywords: moderna, intismeran, melanoma, keytruda, cancer vaccine, data leak, recurrence risk, money, business, Cancer, Vaccine, Data
- Source: Seekingalpha — https://seekingalpha.com/article/4957068-moderna-data-leak-brings-us-no-closer-to-truth-about-cancer-vaccine
- Author: Edmund Ingham
- Published: 2026-10-23T19:00:26+00:00
- Read time: 1 min
- Topics: moderna, intismeran, melanoma, keytruda, cancer vaccine, data leak, recurrence risk, money, business
## Moderna Shares Drop
Moderna's stock fell 20% to $182 per share after early data on its personalized cancer vaccine.
## 42% Recurrence Reduction
Intismeran plus Keytruda showed a 42% reduction in recurrence or death risk versus Keytruda alone.
## Key Uncertainties Remain
Durability, overall survival, and commercial viability remain uncertain with over half of patients not responding.
## Key takeaway

Moderna's personalized cancer vaccine shows 42% reduced recurrence risk but lacks long-term efficacy data.