2-148342533-A-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBA1

The NM_001378120.1(MBD5):​c.-557+197A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.255 in 151,642 control chromosomes in the GnomAD database, including 5,366 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.25 ( 5366 hom., cov: 31)

Consequence

MBD5
NM_001378120.1 intron

Scores

2

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.641
Variant links:
Genes affected
MBD5 (HGNC:20444): (methyl-CpG binding domain protein 5) This gene encodes a member of the methyl-CpG-binding domain (MBD) family. The MBD consists of about 70 residues and is the minimal region required for a methyl-CpG-binding protein binding specifically to methylated DNA. In addition to the MBD domain, this protein contains a PWWP domain (Pro-Trp-Trp-Pro motif), which consists of 100-150 amino acids and is found in numerous proteins that are involved in cell division, growth and differentiation. Mutations in this gene cause an autosomal dominant type of cognitive disability. The encoded protein interacts with the polycomb repressive complex PR-DUB which catalyzes the deubiquitination of a lysine residue of histone 2A. Haploinsufficiency of this gene is associated with a syndrome involving microcephaly, intellectual disabilities, severe speech impairment, and seizures. Alternatively spliced transcript variants have been found, but their full-length nature is not determined. [provided by RefSeq, Jul 2017]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -14 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.91).
BP6
Variant 2-148342533-A-T is Benign according to our data. Variant chr2-148342533-A-T is described in ClinVar as [Benign]. Clinvar id is 1243796.Status of the report is criteria_provided_single_submitter, 1 stars.
BA1
GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.326 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
MBD5NM_001378120.1 linkuse as main transcriptc.-557+197A>T intron_variant ENST00000642680.2 NP_001365049.1

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
MBD5ENST00000642680.2 linkuse as main transcriptc.-557+197A>T intron_variant NM_001378120.1 ENSP00000493871

Frequencies

GnomAD3 genomes
AF:
0.255
AC:
38604
AN:
151524
Hom.:
5351
Cov.:
31
show subpopulations
Gnomad AFR
AF:
0.137
Gnomad AMI
AF:
0.319
Gnomad AMR
AF:
0.333
Gnomad ASJ
AF:
0.184
Gnomad EAS
AF:
0.256
Gnomad SAS
AF:
0.336
Gnomad FIN
AF:
0.309
Gnomad MID
AF:
0.199
Gnomad NFE
AF:
0.298
Gnomad OTH
AF:
0.241
We have no GnomAD4 exomes data on this position. Probably position not covered by the project.
GnomAD4 genome
AF:
0.255
AC:
38658
AN:
151642
Hom.:
5366
Cov.:
31
AF XY:
0.258
AC XY:
19085
AN XY:
74092
show subpopulations
Gnomad4 AFR
AF:
0.137
Gnomad4 AMR
AF:
0.334
Gnomad4 ASJ
AF:
0.184
Gnomad4 EAS
AF:
0.257
Gnomad4 SAS
AF:
0.337
Gnomad4 FIN
AF:
0.309
Gnomad4 NFE
AF:
0.298
Gnomad4 OTH
AF:
0.245
Alfa
AF:
0.292
Hom.:
873
Bravo
AF:
0.250
Asia WGS
AF:
0.332
AC:
1151
AN:
3470

ClinVar

Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not provided Benign:1
Benign, criteria provided, single submitterclinical testingGeneDxJun 23, 2018- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.91
CADD
Benign
0.20
DANN
Benign
0.39

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs35177340; hg19: chr2-149100102; COSMIC: COSV69485604; COSMIC: COSV69485604; API