dbSNP rs201633684: FANCB:p.Leu110Leu (chrX-14865181-T-G) – ACMG Classification: Benign (-14 pts)

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_Very_StrongBP7BS2_Supporting

The NM_001018113.3(FANCB):c.330A>C(p.Leu110Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00011 in 1,163,559 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 33 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.000089 ( 0 hom., 2 hem., cov: 23)

Exomes 𝑓: 0.00011 ( 0 hom. 31 hem. )

Consequence

FANCB
NM_001018113.3 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: -0.950

Variant links:

Genes affected

FANCB (HGNC:3583): (FA complementation group B) This gene encodes a member of the Fanconi anemia complementation group B. This protein is assembled into a nucleoprotein complex that is involved in the repair of DNA lesions. Mutations in this gene can cause chromosome instability and VACTERL syndrome with hydrocephalus. [provided by RefSeq, Apr 2016]

FANCB links:

Genome browser will be placed here

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 X-14865181-T-G is Benign according to our data. Variant chrX-14865181-T-G is described in ClinVar as [Likely_benign]. Clinvar id is 456185.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.95 with no splicing effect.

BS2

High Hemizygotes in GnomAd4 at 2 XL geneVariant has number of hemizygotes lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FANCB	NM_001018113.3 link	c.330A>C	p.Leu110Leu	synonymous_variant	Exon 3 of 10	ENST00000650831.1	NP_001018123.1	Q8NB91A0A024RBW1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FANCB	ENST00000650831.1 link	c.330A>C	p.Leu110Leu	synonymous_variant	Exon 3 of 10		NM_001018113.3	ENSP00000498215.1		Q8NB91

Frequencies

GnomAD3 genomes

AF:

0.0000889

AC:

AN:

112466

Hom.:

Cov.:

AF XY:

0.0000578

AC XY:

AN XY:

34606

show subpopulations

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:

0.000362

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000169

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000180

AC:

AN:

150261

Hom.:

AF XY:

0.000155

AC XY:

AN XY:

51523

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000271

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000716

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000296

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000112

AC:

118

AN:

1051041

Hom.:

Cov.:

AF XY:

0.0000928

AC XY:

AN XY:

334147

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000194

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000618

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000127

Gnomad4 OTH exome

AF:

0.000136

GnomAD4 genome

AF:

0.0000889

AC:

AN:

112518

Hom.:

Cov.:

AF XY:

0.0000577

AC XY:

AN XY:

34668

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000363

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000169

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000183

Hom.:

Bravo

AF:

0.000106

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Fanconi anemia complementation group B

Benign:1

Jul 07, 2023

KCCC/NGS Laboratory, Kuwait Cancer Control Center

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Fanconi anemia

Benign:1

Oct 13, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Fanconi anemia complementation group B;C2931228:VACTERL association, X-linked, with or without hydrocephalus

Benign:1

Mar 04, 2022

Fulgent Genetics, Fulgent Genetics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided

Benign:1

Sep 01, 2024

CeGaT Center for Human Genetics Tuebingen

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

FANCB: BP4, BP7, BS2 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.91

CADD

Benign

0.052

DANN

Benign

0.32

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.8

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over