Collaborative Stage

Collaborative Stage for TNM 7 - Revised 09/29/2009 [ Schema ]

CS Site-Specific Factor 8
KIT Gene Mutation

Note 1: Some gastrointestinal stromal tumors (GISTs) contain oncogenic mutations of the KIT receptor tyrosine kinase gene. The mutations are primarily of exon 11 and rarely of exons 9, 13 and 17.
Note 2: The KIT gene may also be referred to as CD117.

Code	Description
000	KIT gene test performed, negative for mutations
010	KIT gene test performed, positive for mutation of exon 9
020	KIT gene test performed, positive for mutation of exon 11
030	KIT gene test performed, positive for mutation of exon 13
040	KIT gene test performed, positive for mutation of exon 17
800	KIT gene test performed, positive for other specified mutation
810	KIT gene test performed, positive for more than one mutation
850	KIT gene test performed, positive NOS; specific mutation(s) not stated
988	Not applicable: Information not collected for this case
997	KIT gene test ordered, results not in chart
998	KIT gene not done (test was not ordered and was not performed)
999	Unknown Not documented in patient record