Table 3.

CD117 expression in melanoma subtypes

SubtypeIHC scoresaNESNPSb%
0123
Acral12157691937237.3
Mucosal935112111677444.3
CSD2080129931
Non-CSD351872622743.5
UP341142511733.3
Total303145292550219939.6

Abbreviations: NES, number of examined samples; NPS; number of positive samples.

aThe signal intensity of immunohistochemistry results were determined by 3 individual pathologists and scored as 0, 1, 2, and 3, with score “0” as negative and score “3” as the strongest.

bSamples with signal intensity of scores 1, 2 or 3 were regarded as CD117 positive.