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For some cancer patients, immunotherapy may be way to skip surgery and chemo

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Maureen Sideris , 71 , was diagnosed with gastroesophageal cancer in 2022 .

She received immunotherapy as part of a clinical trial at Memorial Sloan Kettering .

The trial focused on people whose tumors had what’s known as mismatch repair deficiency.

Mismatch repair deficiency occurs more frequently in some cancers than others.

Study: 49 patients who completed six months of immunotherapy didn't need surgery, chemotherapy or radiation.

About 75% of the patients were still cancer-free a year or more after completing the treatment.

The research suggests immunotherapy could possibly be used as a first -line treatment for early-stage mismatch repair deficient cancers.