To date two genes are known to be involved in variant LINCL, CLN5 and CLN6,
which map to chromosomes 13q21 and 15q21-23. A subset of Turkish families
with a variant phenotype has been identified. Affected individuals have cur
vilinear bodies and fingerprint profiles on EM but are recombinant at CLN5
and CLN6. These families appear to represent a new locus. Homozygosity mapp
ing is being used to map this locus, which has been designated CLN7. (C) 19
99 Academic Press.