passages.id: split_1_test_3068_passage
passages.type: progene_text
passages.text: The silent KIR3DP1 gene ( CD158c ) is transcribed and might encode a secreted receptor in a minority of humans , in whom the KIR3DP1 , KIR2DL4 and KIR3DL1 / KIR3DS1 genes are duplicated .