Lymphedema-distichiasis (LD) is a dominantly inherited syndrome with onset
of lymphedema at or just after puberty. Most affected individuals have dist
ichiasis-fine hairs arising inappropriately from the eyelid meibomian gland
s-which is evident from birth. A study of three families with LD has shown
linkage to chromosome 16q24.3, and subsequent analysis of the region for re
combinant genes places the locus between D16S422 and D16S3074, a distance o
f similar to 16 cM. Possible candidate genes in this interval include the N
-proteinase for type 3 collagen, PCOLN3; the metalloprotease PRSM1; and the
cell matrix-adhesion regulator, CMAR.