Characterization of a 900-kb inversion polymorphism in human populations
Method
Chromosome-specific assembly
Name
Breakpoint 1
chr17:40928986-41060948
Breakpoint 2
chr17:41521078-42139672
Individuals
RP11
Comments
Breakpoints defined by INVFEST to include all pairs of inverted segmental duplications located at both predicted breakpoint regions
- Martinez-Fundichely et al. 2014 (in preparation)
Description
Accurate prediction of inversions in the human genome from Kidd et al. 2008 fosmid paired-end mapping data using the GRIAL algorithm, and validation of some predictions by sequence analysis and PCR
Method
Paired-end mapping (PEM)
Name
Breakpoint 1
chr17:41017152-41046061
Breakpoint 2
chr17:41711127-41737416
D/C Score
-0.83
Disc. Support Prob.
0
Support
10 probes
Individuals
NA12156
NA12878
NA15510
NA18507
NA18517
NA18555
NA18956
NA19129
NA19240
Comments
Below the threshold of the Discordant Support (DS) probability
Name
Breakpoint 1
chr17:40937225-40947923
Breakpoint 2
chr17:41990236-41999689
D/C Score
-3.64
Disc. Support Prob.
0
Support
4 probes
Individuals
NA12156
NA12878
NA15510
NA18507
NA18517
NA18555
NA18956
NA19129
NA19240
Comments
Below the threshold of the Discordant/Concordant (D/C) ratio score. Below the threshold of the Discordant Support (DS) probability
Characterization of six large inversion polymorphisms with complex segmental duplications at the breakpoints in 27 individuals from three HapMap populations by a metaphase FISH-based assay
Lower expression associated with the STD/STD genotype in blood. Three exons (out of a total of 4) of this gene are shared with the long isoform of gene CRHR1, and it is possible that MGC57346 corresponds to a different splice form of the same gene
Increased expression associated to STD/STD genotype in cerebellum
Functional consequences
Unknown
+ Inversion phenotypical effects
In the Icelandic population, women that carry the INV allele have on average 0.0907 more children than noncarriers (P=0.0068), assuming a dominant effect for the INV allele. The effect of the INV allele in men is an increase of 0.0679 in the average number of children (P=0.0719). With both sexes combined, a carrier of the INV allele is estimated to have 0.0796 more children than a noncarrier (P=0.0025).
H2 haplotypes (INV alleles) predispose to the 17q21.31 microdeletion syndrome. In Europeans, a 155-kb duplication fixed in the inverted chromosomes that generates directly oriented segmental duplications, can cause a deletion of approximately 600 kb by NAHR. This deletion encompasses part of the inverted segment and includes genes like MAPT and CRHR1.