X-14796834-A-G

Variant summary

Our verdict is Benign. Variant got -11 ACMG points: 0P and 11B. BP4_Strong BP6_Moderate BP7 BS2

The NM_001410764.1(FANCB):c.2692T>C(p.Leu898=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000128 in 109,470 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 3 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 0.00013 (0 hom., 3 hem., cov: 21)
• Consequence: FANCB NM_001410764.1 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.118

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]

ACMG classification

Verdict is Benign. Variant got -11 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BP6: Variant X-14796834-A-G is Benign according to our data. Variant chrX-14796834-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 3067472.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.118 with no splicing effect.
• BS2: High Hemizygotes in GnomAd at 3 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FANCB	NM_001410764.1	c.2692T>C	p.Leu898=	synonymous_variant	12/13
FANCB	XR_001755672.2	n.2967T>C		non_coding_transcript_exon_variant	12/15
FANCB	XR_001755673.2	n.6909T>C		non_coding_transcript_exon_variant	11/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FANCB	ENST00000696353.1	c.2692T>C	p.Leu898=	synonymous_variant	12/13			A2
FANCB	ENST00000696354.1	c.*309T>C		3_prime_UTR_variant	11/11			A2
FANCB	ENST00000696352.1	c.2692T>C	p.Leu898=	synonymous_variant, NMD_transcript_variant	12/15

Frequencies

GnomAD3 genomes AF: 0.000128 AC: 14 AN: 109470 Hom.: 0 Cov.: 21 AF XY: 0.0000945 AC XY: 3 AN XY: 31740

Gnomad AFR AF: 0.0000333

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000998

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: 0.000227

Gnomad OTH AF: 0.00

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.000128 AC: 14 AN: 109470 Hom.: 0 Cov.: 21 AF XY: 0.0000945 AC XY: 3 AN XY: 31740

Gnomad4 AFR AF: 0.0000333

Gnomad4 AMR AF: 0.0000998

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000227

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000356 Hom.: 2

Bravo AF: 0.000128

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Likely benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Mar 01, 2024

FANCB: BS2 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
Cadd	Benign	0.83
Dann	Benign	0.67

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs752613260; hg19: chrX-14814956;