Fewer copy number alterations are seen in BCL2-R-neg follicular lymphomas compared to cFL, where more frequent gains in the chromosomal regions 1q, 2p15, 7, 8q, 12q, 18p, and 18q, as well as losses in 1p36, 3q, 6q, 9p, 10q, 11q, 13q, and 17p may be identified. The gene discussed is BCL2; the disease is follicular lymphoma.