NCIt definition : A rare genetic disorder characterized by nail dystrophy, reticulated skin pigmentation
especially on the neck and chest, and oral leukoplakia. In about half the cases mutations
in the TERT, TERC, DKC1, or TINF2 genes are identified. Patients are at an increased
risk of developing bone marrow failure, myelodysplastic syndrome, leukemia, or cancer,
especially in the head and neck region.;