Intragenic suppression of n2420 gain of function; n2595 is a nonsense mutation of acr-2. G to A at residue 525, causing W175-STOP. (WT: CACGGAGATGTGACATGGGTCCCACCTGCAATGTT) (n2595: CACGGAGATGTGACATGAGTCCCACCTGCAATGTT). Reference: Jospin M, et al. PLoS Biol. 2009 Dec;7(12):e1000265.