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 curvilinear bodies and fingerprint profiles on EM but are recombinant at CLN5 and CLN6. These families appear to represent a new locus. Homozygosity mapping is being used to map this locus, which has been designated CLN7.
