PIK3CA and neoplasm: In these CNVs, 29 enes were found to have a relationship with tumours in the OMIM database: RSPO1, PTCH1, MUTYH and RAD54L on chromosome 1; GALNT3 and HOXD4 on chromosome 2; ATR, TFG and PIK3CA on chromosome 3; PDGFRA, KIT and CHIC2 on chromosome 4; RNF139, RAD54B, EXT1, MYC, RB1CC1 and PLAG1 on chromosome 8; RRAS2, TSG101 and CD82 on chromosome 11; FGF23 on chromosome 12; DICER1 on chromosome 14; WWOX and ZFHX3 on chromosome 16; FLCN on chromosome 17; SMARCA4 on chromosome 19; GNAS on chromosome 20; and BACH1 on chromosome 22.