ImPrint Biomarker Identifies Breast Cancer Patients Likely to Respond to Immunotherapy

SAN DIEGO — Using ImPrint, an immune-related biomarker, clinicians can identify patients with breast cancer who are likely to respond to neoadjuvant immunotherapy, according to data from the

She added that, although effective, immunotherapy also carries the risk of serious immune-related toxicities, and knowledge of ImPrint class can help patients and physicians determine whether immunotherapy is a good treatment option."Many patients will be willing to take the risk of immunotherapy toxicities if their odds of responding are very high, as is the case for ImPrint+ patients, but likely less enthused with a low likelihood of response," Dr. Wolf said during the interview.

In comparison, pCR rates were only 16% in ImPrint-negative patients. The highest response rate was observed in the anti–PD-1/TLR9 dual immunotherapy arm, with a pCR rate of greater than 90% in ImPrint-positive patients. In the control arm, pCR rates were 33% in ImPrint-positive and 8% in ImPrint-negative patients.

The pCR rates for MP2 and grade III were 56% and 45%, respectively, which are much smaller than the pCR rates observed for ImPrint+ patients .

Source: Healthcare Press (healthcarepress.net)

Imprint Biomarker Breast Cancer Immunotherapy Response Rates Toxicities

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