Zika virus (ZIKV) causes congenital microcephaly. Although ZIKV can impair cell cycle progression and provoke apoptosis, which probably contributes to disease aetiology through depletion of neural progenitor cells, additional cellular mechanisms may be important. Here, we investigated whether ZIKV infection alters centrosome number and spindle positioning, because such defects are thought to be...

We describe three children with Hirschsprung's disease and microcephaly, two of whom also have an iris coloboma. Two of the children, one with a coloboma and one without, are from the same consanguineous pedigree. The third case is unrelated and was identified by the matching program of the London Dysmorphology Database. This is the first report of this combination of features which are conside...

A boy with intrauterine growth retardation, microcephaly, dysostosis of the skull, hypoplastic facial bones, labiogingival retraction, agenesis of the clavicles, distal aphalangia, and severely hypoplastic thumbs and halluces is described. The features are consistent with the Yunis-Varon syndrome. Review of published reports shows this to be a generalised disorder with variable manifestations i...

The development of the mammalian cerebral cortex involves a series of mechanisms: from patterning, progenitor cell proliferation and differentiation, to neuronal migration. Many factors influence the development of the cerebral cortex to its normal size and neuronal composition. Of these, the mechanisms that influence the proliferation and differentiation of neural progenitor cells are of parti...

We report on a 9 year old girl, born to consanguineous parents, with major microcephaly, cutaneous syndactyly of the toes, and moderate mental retardation with marked speech involvement. In addition, moderate dysmorphic features and skeletal abnormalities were noted. This multiple congenital anomalies/mental retardation pattern very much resembles that described by Filippi. This observation con...

A Pakistani couple, who were first cousins once removed through their fathers, and whose mothers were also related, had two liveborn children, a boy and a girl. Both children died within 2 hours of birth with occipital encephalocele, microcephaly, polycystic kidneys, and cystic distension of intrahepatic bile ducts. Both children had normal karyotypes. These abnormalities constitute Meckel's sy...

mutations in the gjb2 gene at the dfnb1 locus on chromosome 13q12 are associated with autosomal recessive non syndromic hearing loss (arnshl) in many populations. a single mutation, at position 35 (35delg) accounts for approximately 30-63% of mutations in white populations with a carrier frequency of 1.5-2.5% in most european, north american and mediterranean populations. in this study we have ...

Introduction Nijmegen Breakage Syndrome (NBS) is a rare autosomal recessive DNA repair disorder, caused by mutation in the NBS1 gene on chromosome 8q21. The hallmark symptom is microcephaly, other characteristic features are facial phenotype, growth retardation, premature ovarian failure in girls. Psychomotor development is usually not disturbed. Impaired cellular and humoral immunity is essent...

Seckel syndrome is a rare disease, with autosomal recessive mode of inheritance. Clinically manifests as intrauterine and postnatal growth retardation along with microcephaly, receded forehead, micrognathia, hypoplastic ears and mental retardation. Here we present a case of two and a half months old boy with four days history of loose stools and fever with facial dysmorphism and growth retardat...