Partial 9 trisomy by 3:1 segregation of balanced maternal translocation (7q+; 9q-).
A male infant is presented with an extra derivate chromosome No. 9 resulting from a 3:1 meiotic segregation of a maternal balanced translocation involving the long arms of chromosomes No. 7 and 9. The patient is trisomic for the short arm and secondary constriction of the long arm of No. 9 and for the telomeric end of the long arm of No. 7. In addition to the features of the 9p trisomy syndrome he presents marked congenital myopia and extreme hypoplasia of the penis.
6 references, click to expand
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[Giemsa-R-banding analysis of the trisomy 9p and report of a new case].Humangenetik. 1973 Apr 16;18(2):129-38 PMID: 4124236
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A new case of trisomy for the short arm of No. 9 chromosome.J Med Genet. 1973 Sep;10(3):296-9 PMID: 4774540
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Presumed trisomy for the short arm of chromosome No. 9 not due to inherited translocation.Humangenetik. 1971;12(3):175-81 PMID: 5563410
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[4 cases of trisomy for the short arm of chromosome 9. Individualization of a new morbid entity].Ann Genet. 1970 Dec;13(4):217-32 PMID: 5313386
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[Partial trisonomy C9 in a case of balanced maternal B4-C9 translocation].Z Kinderheilkd. 1971;109(4):293-9 PMID: 5555168
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[Cp trisomy: a new syndrome].Ann Genet. 1971 Sep;14(3):177-86 PMID: 5315464
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