Genetic Variant FRG2B:p.His11His (chr10-133626710-G-A) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 0P and 5B. BP4_StrongBP7

The NM_001080998.2(FRG2B):c.33C>T(p.His11His) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0 ( 0 hom., cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

FRG2B
NM_001080998.2 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.842

Publications

9 publications found

Variant links:

Genes affected

FRG2B (HGNC:33518): (FSHD region gene 2 family member B) Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

FRG2B links:

ENSG00000288107 (HGNC:):

ENSG00000288107 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -5 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.99).

BP7

Synonymous conserved (PhyloP=0.842 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FRG2B	NM_001080998.2 link	c.33C>T	p.His11His	synonymous_variant	Exon 1 of 4	ENST00000425520.2	NP_001074467.1	Q96QU4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
FRG2B	ENST00000425520.2 link	c.33C>T	p.His11His	synonymous_variant	Exon 1 of 4	1	NM_001080998.2	ENSP00000401310.1	Q96QU4
FRG2B	ENST00000443774.5 link	c.33C>T	p.His11His	synonymous_variant	Exon 1 of 4	1		ENSP00000408343.1	A0A0A0MSZ2
ENSG00000288107	ENST00000655152.1 link	n.446-823G>A		intron_variant	Intron 1 of 1
ENSG00000288107	ENST00000669404.1 link	n.303-823G>A		intron_variant	Intron 2 of 2

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

152220

Hom.:

Cov.:

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000195

AC:

AN:

205256

AF XY:

0.0000361

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000433

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

6.85e-7

AC:

AN:

1459708

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726162

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33408

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26132

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86162

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53420

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4150

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111816

Other (OTH)

AF:

0.00

AC:

AN:

60208

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74500

African (AFR)

AF:

0.00

AC:

AN:

41542

American (AMR)

AF:

0.00

AC:

AN:

15312

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5188

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10628

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68042

Other (OTH)

AF:

0.00

AC:

AN:

2116

Alfa

AF:

0.00

Hom.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.99

CADD

Benign

2.4

(source)

DANN

Benign

0.52

PhyloP100

0.84

PromoterAI

0.00090

Neutral

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over