Home / MBD4 c.817G>A / gnomAD Canada
gnomAD Canada v1.0 · HostSeq
NM_001276270.2:c.817G>A
NP_001263199.1:p.(Ala273Thr)  ·  MBD4
GRCh38
chr3:129,436,827 C>T
GRCh37
chr3:129155670 C>T
rsID
—
Type
MULTI-SNV · missense variant
Allele type
snv · 2 alt
Cohort
HostSeq (10,487 genomes)
Flags
was_split
Allele frequency
9.1802%
1691 / 18,420 alleles
PASS
Allele count
1691
adjusted · raw: 1691
Allele number
18,420
adjusted · raw: 18,422
Allele frequency
9.18e-02
9.1802% MAF
Homozygotes
90
alt hom carriers
grpmax FAF95
9.65e-02
South Asian · AC=151 AN=1,362
FAF95 max
9.65e-02
South Asian
FAF99 max
9.10e-02
South Asian
Cohort size
10,487
whole genomes
Raw vs adjusted allele counts
ACANAFHom
Adjusted
PASS genotypes only
 169118,420 9.18e-02 90
Raw
all genotypes
 1691 18,422 9.18e-02 —
Allele frequency by ancestry
GRCh38 · HostSeq genomes · Canada
Population AC AN AF Hom
African/African American
afr
 67 1,020
6.5686%
 2
Latino/Admixed American
amr
 67 838
7.9952%
 2
Ashkenazi Jewish
asj
 118 832
14.1827%
 14
East Asian
eas
 110 1,338
8.2212%
 5
European (Finnish)
fin
 0 8 — 0
Middle Eastern
mid
 21 144
14.5833%
 0
European (non-Finnish)
nfe
 1021 11,740
8.6968%
 49
Remaining individuals
oth
 136 1,138
11.9508%
 9
South Asiangrpmax
sas
 151 1,362
11.0866%
 9
Total
 1691 18,420
9.1802%
 90
Population codes are displayed as sourced from gnomAD Canada v1.0 without relabelling. Bar widths scaled relative to the grpmax population (South Asian). Grpmax FAF95 = 9.65e-02.
Filtering allele frequency (FAF)
PopulationFAF 95%FAF 99%
Overall
 8.82e-02 8.67e-02
African/African American
afr
 5.31e-02 4.85e-02
Latino/Admixed American
amr
 6.46e-02 5.90e-02
East Asian
eas
 6.98e-02 6.51e-02
European (non-Finnish)
nfe
 8.25e-02 8.08e-02
South Asian
sas
 9.65e-02 9.10e-02
Sex-stratified allele counts are based on inferred chromosomal sex (XX / XY) from coverage of sex chromosomes in the HostSeq cohort.
XX genotypes
966 / 10,594  ·  9.1184%
PopulationACANAFHom
African/African American
afr
 39 552 7.065% 2
Latino/Admixed American
amr
 40 456 8.772% 1
Ashkenazi Jewish
asj
 59 420 14.048% 8
East Asian
eas
 64 746 8.579% 3
European (Finnish)
fin
 0 8 — 0
Middle Eastern
mid
 13 68 19.118% 0
European (non-Finnish)
nfe
 604 7,108 8.497% 24
Remaining individuals
oth
 76 610 12.459% 6
South Asian
sas
 71 626 11.342% 2
XY genotypes
725 / 7,826  ·  9.2640%
PopulationACANAFHom
African/African American
afr
 28 468 5.983% 0
Latino/Admixed American
amr
 27 382 7.068% 1
Ashkenazi Jewish
asj
 59 412 14.320% 6
East Asian
eas
 46 592 7.770% 2
European (Finnish)
fin
 0 — — 0
Middle Eastern
mid
 8 76 10.526% 0
European (non-Finnish)
nfe
 417 4,632 9.003% 25
Remaining individuals
oth
 60 528 11.364% 3
South Asian
sas
 80 736 10.870% 7
Variant quality scores
MQ
Mapping quality
249.815
FS
Fisher strand bias · lower = better
0.0
MQRankSum
MQ rank sum test
0.0
SOR
Strand odds ratio
0.7024
ReadPosRankSum
Read position rank sum
0.0
AS_pab_max
Max posterior allele balance
1.0
RF
Random forest score
0.9529
InbreedingCoeff
Inbreeding coefficient
0.0161
Region flags
LCR (low complexity region) segdup (segmental duplication) monoallelic
Allele balance · alt carriers
Allele balance distribution for alt carriers.
Expected heterozygous AB ≈ 0.5. Values near 0 or 1 may indicate homozygosity or data quality issues.
Read depth distribution (all genotypes)
Read depth distribution across all genotypes.
Genotype quality distribution
Genotype quality distribution across all genotypes.
Strand bias table (SB)
ForwardReverse
Reference
 17531 18082
Alternate
 19384 20178
Genotype quality · alt carriers only
GQ distribution for alt allele carriers.
Alt-carrier GQ distribution. High GQ (≥20) indicates confident heterozygous calls.
Read depth · alt carriers only
Depth distribution for alt allele carriers.
Applied filters
PASS singleton was_split
Age at recruitment for heterozygous carriers observed in the HostSeq cohort. Age data is available only for a subset of participants.
Age distribution · heterozygous carriers
Age distribution for heterozygous carriers.
Carriers below age 30: 267 Carriers above age 80: 96
Age distribution · homozygous carriers
Age distribution for homozygous carriers.
Dataset information
Dataset name
gnomAD Canada v1.0
Cohort
HostSeq
Data type
Whole genome sequencing
Reference genome
GRCh38
Total genomes
10,487
Alleles (this variant)
18,420
Alt allele count
1691
Homozygotes
90
Cross-reference links
gnomAD v4.1 (global) gnomad.broadinstitute.org
gnomAD v2.1 (exome) gnomad.broadinstitute.org
ClinVar — NM_001276270.2:c.817G>A ncbi.nlm.nih.gov
Variant interpretation (LYFE Sciences) Back to full report
Acknowledgements & data use
Required attribution · gnomAD Canada v1.0
About this display
LYFE Sciences is an independent, unfunded variant interpretation tool. This page displays population frequency data from gnomAD Canada v1.0; I did not generate, fund, or contribute to this dataset. All data belongs to the gnomAD Canada project and the HostSeq cohort. I am presenting it in a convenient format alongside variant interpretation.
Data source
All population frequency data on this page originates from gnomAD Canada v1.0, produced from the HostSeq whole-genome sequencing cohort and made publicly available by the BC Genome Sciences Centre (BCGSC). The official gnomAD Canada browser is at gnomad.ca and the BCGSC instance at bcgsc.ca/gnomad. Please cite the original resource if you use this data in research.
Population labels
Population ancestry labels are reproduced exactly as provided by gnomAD Canada and the HostSeq cohort. These labels reflect ancestry inference using gnomAD v4 reference population PCA and are governed by the Indigenous data sovereignty principles of the Silent Genomes Project and the Indigenous Background Variant Library (IBVL).
Key references
1
Yoo S et al. HostSeq: a Canadian whole genome sequencing and clinical data resource. BMC Genom Data. 2023. doi:10.1186/s12863-023-01128-3
2
Chen S*, Francioli LC* et al. A genomic mutational constraint map using variation in 76,156 human genomes. Nature. 625, 92–100 (2024). doi:10.1038/s41586-023-06045-0