Schwannomas and meningiomas occur as multiple tumors in sufferers of n
eurofibromatosis 2 (NF2) and as solitary tumors in the general populat
ion due to the inactivation of a gene at chromosome 22q12. In 1993, a
location cloning approach revealed this tumor suppressor, dubbed merli
n, as a novel member of a family of proteins that link elements of the
cytoskeleton and the cell membrane. Subsequent investigations have co
nfirmed merlin's role in tumor formation, but have yet to reveal its m
echanism of action.