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Related Experiment Videos

Microcephaly with normal intelligence, and chorioretinopathy.

G M Abdel-Salam1, G Vogt, A Halász

  • 1Department of Human Genetics and Teratology, National Center for Epidemiology, Hungary.

Ophthalmic Genetics
|January 5, 2000
PubMed
Summary
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This study reports a rare case of microcephaly with normal intelligence in an 18-year-old female. The patient presented with specific physical features and bilateral congenital hypertrophy of the retinal pigment epithelium (CHRPE).

Area of Science:

  • Medical genetics
  • Pediatric neurology
  • Ophthalmology

Background:

  • Microcephaly is often associated with intellectual disability, making cases with normal intelligence noteworthy.
  • Congenital hypertrophy of the retinal pigment epithelium (CHRPE) is a rare ocular finding.
  • Genetic mutations, particularly in the APC gene, are sometimes linked to such conditions.

Observation:

  • An 18-year-old female presented with microcephaly but maintained normal intelligence and neurological function.
  • Physical examination revealed hypoplastic mandible, cup-shaped ears, incurved little fingers, retinal pigmentation, and depigmentation areas.
  • A history of osteochondroma was also noted in the patient.

Findings:

  • Genetic testing for APC gene mutations, specifically exon 15, yielded negative results.

Related Experiment Videos

  • The patient exhibited bilateral congenital hypertrophy of the retinal pigment epithelium (CHRPE).
  • This case represents the third documented instance of microcephaly combined with normal intelligence and bilateral CHRPE.

    • Implications:

    • This case expands the understanding of phenotypic variability in conditions presenting with microcephaly and normal intelligence.
    • It highlights the importance of considering CHRPE in the differential diagnosis of microcephaly, even without apparent neurological deficits.
    • Further research may be needed to identify the genetic underpinnings of this specific phenotype.