A boy of 16 months of age with psychomotor retardation, short stature,
microbrachycephaly, triangular face, microphthalmia, palpebral fissur
es slanted downnward, cardiopathy, simian crease on left hand, agenesi
s of fourth finger on the right hand and of the nail in the second fin
ger on the right one was studied. The karyotype showed a complement of
46, XY, del(6) (q16.2q22.2). The clinical and cytogenetic analysis wi
th other previous cases described in the literature led us to identifi
cate other patients with ectrodactyly. Therefore as other authors we s
uggest the possible localization of gene(s) that could have involvemen
t with the development of extremities in this segment.