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Background  Cenani-Lenz Syndactyly (CLS) syndrome is a rare autosomal recessive disorder characterized by syndactyly and oligodactyly of fingers and toes, disorganization and fusion of metacarpals, metatarsals and phalanges, radioulnar synostosis and mesomelic shortness of the limbs, with lower limbs usually being much less affected than upper limbs.    Case presentation  we report here two patients, born to consanguineous Sri Lankan parents, present with bilateral postaxial oligodactyly limited to upper limbs. While the proband has no noticeable facial dysmorphism, renal impairments or cognitive impairments, his affected sister displays a few mild facial dysmorphic features. Whole exome sequencing of the proband showed a novel deleterious homozygous mutation (c.1348A > G) in the  LRP4  gene, resulting in an Ile450-to-Val (I450V) substitution.    Conclusion  This recessive mutation in  LRP4  confirmed the diagnosis of CLS syndrome in two patients present with isolated hand syndactyly. This is the first reported case of CLS syndrome in a family of Sri Lankan origin.    Electronic supplementary material  The online version of this article (10.1186/s12881-018-0646-1) contains supplementary material, which is available to authorized users.

Cenani-Lenz syndactyly syndrome - a case report of a family with isolated syndactyly