Therapeutic Response Statement (Sensitivity)

This therapeutic response statement supports the relationship that MSI-H status confers therapeutic sensitivity to Pembrolizumab in patients with Colorectal Adenocarcinoma.

The Republic of Ireland's Health Service Executive (HSE) has approved pembrolizumab (200mg and 400mg) for reimbursement as a first-line treatment option for the treatment of adult patients with metastatic microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) colorectal cancer (CRC).

This statement is based on a regulatory approval from the Health Service Executive:

First-line treatment of metastatic microsatellite instability-high (MSI-H) or mismatch repair deficient (dMMR) colorectal cancer (CRC) in adults

Citation

Pembrolizumab 400mg Monotherapy, 2024, version number 12a, NCCP National SACT Regimen, NCCP, viewed 26/03/2026, https://healthservice.hse.ie/documents/6389/558_v12b_Pembrolizumab_400mg_monotherapy.pdf