Colorectal Cancer Immunohistochemistry Panel Launched

Increasingly, guidelines are recommending universal screening of all newly diagnosed colorectal cancers for Lynch syndrome.

Lynch syndrome results in a 50% to 80% lifetime risk of developing colorectal cancer, making it important to identify the syndrome in colorectal cancer patients and at-risk family members. Identification of the syndrome may result in early detection and possible cancer prevention among those with the inherited mutation.

The CE-marked VENTANA MMR IHC Panel (Ventana Medical Systems, Tucson, AZ, USA) has been launched which provides clinicians with a comprehensive group of immunohistochemistry (IHC) tests for patients diagnosed with colorectal cancer. The tests detect certain proteins associated with a DNA repair mechanism called mismatch repair (MMR), and aid in differentiating between sporadic colorectal cancer and probable Lynch syndrome, a hereditary form of colorectal cancer. About 3% of colorectal cancers are associated with Lynch syndrome.

The CE-marked VENTANA MMR IHC Panel consists of VENTANA anti-MLH1 (M1), VENTANA anti-PMS2 (A16-4), VENTANA anti-MSH2 (G219-1129), VENTANA anti-MSH6 (SP93) antibodies, for patients diagnosed with colorectal cancers for the detection of mismatch repair protein deficiency as an aid in the identification of probable Lynch syndrome, and VENTANA BRAF V600E (VE1) antibody as an aid to differentiate between sporadic colorectal cancer and probable Lynch syndrome.

Ann Costello, Head of Roche Tissue Diagnostics, said, “This testing impacts not just the patient, but family members who may benefit from further genetic testing and advanced monitoring to detect colorectal cancer at its earlier stages, when it is more treatable. The VENTANA MMR IHC Panel provides clinicians with an additional tool to perform universal tumor screening for probable Lynch syndrome as recommended by medical guidelines.”