X chromosome | Y chromosome | Philadelphia chromosome | polytene chromosome | Human Y-chromosome DNA haplogroup | An inversion loop in the A arm of a chromosome from an ''Axarus |
The most important genetic alteration associated with poor prognosis in uveal melanoma is inactivation of BAP1, which most often occurs through mutation of one allele and subsequent loss of an entire copy of Chromosome 3 (Monosomy 3) to unmask the mutant copy.