Partial deletion 9p syndrome in Malaysian children
1Genetics and Metabolism Unit, Department of Paediatrics, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur, Malaysia. hbchew155@hotmail.com
Insights
This study details the first Malaysian children diagnosed with partial deletion 9p syndrome, a rare genetic disorder. Early genetic testing like karyotyping is crucial for diagnosing this condition and managing its associated health issues.
Area of Science:
- Genetics
- Pediatrics
- Rare Diseases
Background:
- Partial deletion 9p syndrome is a rare chromosomal disorder.
- Early diagnosis is essential for effective management and genetic counseling.
Observation:
- Two Malaysian children presented with characteristic features of partial deletion 9p syndrome.
- Clinical manifestations included trigonocephaly, facial anomalies, congenital heart defects, and digital abnormalities.
Findings:
- Chromosomal analysis confirmed partial deletion at the short arm of chromosome 9 in both patients.
- One patient exhibited underdeveloped female genitalia and anterior anus; the other had hypocalcaemia and a high arched palate, initially mimicking DiGeorge syndrome.
Implications:
- This report highlights the importance of karyotyping in diagnosing syndromic craniostenosis with multiple anomalies.
- Early syndromic diagnosis facilitates prognostic assessment, genetic counseling, and tailored patient management.
Abstract:
We report the first two Malaysian children with partial deletion 9p syndrome, a well delineated but rare clinical entity. Both patients had trigonocephaly, arching eyebrows, anteverted nares, long philtrum, abnormal ear lobules, congenital heart lesions and digital anomalies. In addition, the first patient had underdeveloped female genitalia and anterior anus. The second patient had hypocalcaemia and high arched palate and was initially diagnosed with DiGeorge syndrome. Chromosomal analysis revealed a partial deletion at the short arm of chromosome 9. Karyotyping should be performed in patients with craniostenosis and multiple abnormalities as an early syndromic diagnosis confers prognostic, counselling and management implications.
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