Analysis of genetics mechanism for the phenotypic diversity in a patient carrying a rare ring chromosome 9 / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
; (6): 71-75, 2016.
Article
in Zh
| WPRIM
| ID: wpr-247732
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To explore the genetics mechanism for the phenotypic variability in a patient carrying a rare ring chromosome 9.</p><p><b>METHODS</b>The karyotype of the patient was analyzed with cytogenetics method. Presence of sex chromosome was confirmed with fluorescence in situ hybridization. The SRY gene was subjected to PCR amplification and direct sequencing. Potential deletion and duplication were detected with array-based comparative genomic hybridization (array-CGH).</p><p><b>RESULTS</b>The karyotype of the patient has comprised 6 types of cell lines containing a ring chromosome 9. The SRY gene sequence was normal. By array-CGH, the patient has carried a hemizygous deletion at 9p24.3-p23 (174 201-9 721 761) encompassing 30 genes from Online Mendelian Inheritance in Man.</p><p><b>CONCLUSION</b>The phenotypic variability of the 9p deletion syndrome in conjunct with ring chromosome 9 may be attributable to multiple factors including loss of chromosomal material, insufficient dosage of genes, instability of ring chromosome, and pattern of inheritance.</p>
Full text:
1
Index:
WPRIM
Main subject:
Ring Chromosomes
/
Chromosomes, Human, Pair 9
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Sex Chromosome Disorders
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Karyotype
/
Genetics
Limits:
Female
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Humans
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Infant
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Male
Language:
Zh
Journal:
Chinese Journal of Medical Genetics
Year:
2016
Type:
Article