2013年4月1日 · Chromosome 9 presents the highest degree of morphological variations among the non-acrocentric human chromosomes. Variants include 9qh+, 9cenh+, 9ph+, 9qh-, or inv (9) (p11q13), and they are commonly found in routine cytogenetics, with an overall frequency of approximately 1.5% in the general population [1].

Pericentric inversion 9 is a common chromosome variant with an incidence of approximately 1.6% in the general population [1]. Despite the relatively high incidence of this finding, there is debate in the literature over its clinical significance resulting in confusion about how to counsel patients regarding the medical management of this variant.

2020年5月13日 · Here we report a novel large pericentric inversion of chromosome 9, inv (9) (p23q22.3) in several apparently unrelated carriers, resulting in fertility problems and abnormal offspring. We studied...

2005年7月1日 · Pericentric inversion of the heterochromatic region of chromosome 9 [inv(9)] is a common heteromorphism in the general population. It is presumed familial as there are no reports of de novo inv(9) chromosomes in constitutional karyotypes. We report 2 cases of acquired inv(9) chromosomes; 1 patient w …

Background: One of the frequent occurrences in chromosome rearrangements is pericentric inversion of the Chromosome 9; inv (9) (p11q12), which is consider to be the variant of normal karyotype. Although it seems not to correlate with abnormal phenotypes, there have been many controversial reports indicating that it may lead to abnormal clinical ...

2005年7月1日 · Pericentric inversion of the heterochromatic region of chromosome 9 [inv (9)] is a common heteromorphism in the general population. It is presumed familial as there are no reports of de novo inv (9) chromosomes in constitutional karyotypes.

2006年9月1日 · Results: The pericentric inversion frequency of different chromosomes in our study was 1.24% and frequency of inv (9) (p12q13) was high (64.29%) compared to other pericentric inversions in our...

A normal male 46,XX,inv(9)(p12q13); a male with Down syndrome 47,XY,+21,inv(9)(p12q13); a premature infant with multiple congenital malformations 46,XX,inv(9)(p12q21), and a Down syndrome proband 47,XYqs,+21,inv(9)(p13q21), all with inherited inverted chromosome 9 …

Pericentric inversion of the chromosome 9, inv (9) (p11q13), is such a common occurrence that some cytogeneticists would consider them as normal variants. The incidence is said to be about 1% to 1.65% in the general population.

Chromosome 9 presents the highest degree of morphological variations among the non-acrocentric human chromosomes. Variants include 9qh+, 9cenh+, 9ph+, 9qh-, or inv (9) (p11q13), and they are commonly found in routine cytogenetics, with an overall frequency of approximately 1.5% in the general population [1].