Another research discovery – new clues to lymphoma
January 18, 2010
Dr Nelson blogs about the most recent research discovery in lymphoma.
More exciting news from the BC Cancer Agency today – following two recent breakthroughs in ovarianand breast cancer, BC Cancer Agency researchers have now discovered a never before seen mutation in the two most common types of non-Hodgkin’s lymphoma – diffuse large B-cell lymphoma and follicular lymphoma.
First of all, this is a groundbreaking discovery and a timely one, because lymphoma is the fifth most common cancer and unfortunately, the fastest growing.
It’s significant because the mutation occurred in exactly the same place in one particular gene – called EZH2 – in all the patients’ tumours in the study. Usually, mutations are observed in different sites in individual tumours – but this one shows in exactly the same place.
This has huge implications for lymphoma patients.
Diffuse large B-cell lymphoma is aggressive and can only be cured in about 65 per cent of patients, using strong doses of chemotherapy. Follicular lymphoma cannot be cured – but can be kept in check for long periods of time with relatively mild chemotherapy.
With the discovery of this consistent mutation, researchers now have a new “marker” or target for these two lymphomas that could lead to earlier diagnosis and better treatments, possibly specifically targeted treatments that would only affect the lymphoma cells, not the patient’s healthy cells.
An artistic representation of the mutated protein (EZH2) with the distinct amino acids (building blocks) represented by different colours. The amino acid found in this study to be mutated in nearly a quarter of all lymphomas of a specific subtype is indicated in white.
EZH2 is now one of the most frequently mutated single genes ever found in lymphoma.
As with the breast and ovarian cancer discoveries, this research was made possible by the BC Cancer Agency’s Genome Sciences Centre. Their capacity and ability to unravel the genetic sequences of tumours ranks as among the best in the field, worldwide.
This is another very exciting achievement for the BC Cancer Agency, once again supported by generous BC Cancer Foundation donors.
Thank you for making this possible.