Novel duplication on chromosome 16 (q12.1-q21) associated with behavioral disorder, mild cognitive impairment, speech delay, and dysmorphic features: case report
2011

Case Report of a Girl with Chromosome 16 Duplication

Sample size: 1 publication Evidence: low

Author Information

Author(s): Ljubica Odak, Ingeborg Barišić, Leona Morožin Pohovski, Mariluce Riegel, Albert Schinzel

Primary Institution: Children's Hospital Zagreb, Clinical Hospital Center Sisters of Mercy Zagreb, Croatia

Hypothesis

What are the clinical implications of a novel duplication on chromosome 16 associated with behavioral and cognitive disorders?

Conclusion

The study presents a unique case of a girl with a 9.92 Mb duplication on chromosome 16, highlighting its association with specific behavioral and cognitive challenges.

Supporting Evidence

  • The patient exhibited speech delay, learning difficulties, and behavioral problems.
  • Genetic analysis confirmed a 9.92 Mb duplication on chromosome 16.
  • This is the first reported case of the specific 16q12.1-q21 duplication.
  • Clinical features included distinct dysmorphic facial features.
  • The study emphasizes the importance of combining conventional and molecular techniques for diagnosis.

Takeaway

This study is about a girl who has a piece of her chromosome 16 duplicated, which is linked to her having trouble with speaking and learning.

Methodology

The study used high-resolution karyotyping, fluorescence in situ hybridization, and array comparative genomic hybridization to analyze the patient's chromosomes.

Limitations

The study is based on a single case, limiting the generalizability of the findings.

Participant Demographics

The participant is an 18-year-old female with a family history of healthy siblings and parents.

Digital Object Identifier (DOI)

10.3325/cmj.2011.52.415

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