rs776802337

Positions:

• chrX-14853048-A-C
• chrX-14853048-A-G
• chrX-14853048-A-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001018113.3(FANCB):​c.1317T>G​(p.Ser439Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000092 in 1,086,399 control chromosomes in the GnomAD database, with no homozygous occurrence. There are no hemizygote samples in GnomAD. 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: not found (cov: 23)
  • Exomes 𝑓: 9.2e-7 (0 hom. 0 hem.)
• Consequence: FANCB NM_001018113.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.68

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 Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.18855333).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FANCB	NM_001018113.3	c.1317T>G	p.Ser439Arg	missense_variant	6/10	ENST00000650831.1	NP_001018123.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FANCB	ENST00000650831.1	c.1317T>G	p.Ser439Arg	missense_variant	6/10		NM_001018113.3	ENSP00000498215	P2

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD3 exomes AF: 0.00000549 AC: 1 AN: 181994 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 66550

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 SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000123

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 9.20e-7 AC: 1 AN: 1086399 Hom.: 0 Cov.: 25 AF XY: 0.00 AC XY: 0 AN XY: 352903

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000120

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 23

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.49
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Benign	0.35	T;T;T
FATHMM_MKL	Benign	0.29	N
LIST_S2	Benign	0.49	T;.;T
M_CAP	Uncertain	0.12	D
MetaRNN	Benign	0.19	T;T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Uncertain	2.4	M;M;.
MutationTaster	Benign	1.0	N;N
PrimateAI	Benign	0.27	T
PROVEAN	Uncertain	-2.9	D;D;D
REVEL	Benign	0.16
Sift	Benign	0.040	D;D;D
Sift4G	Uncertain	0.034	D;D;D
Polyphen		0.92	P;P;.
Vest4		0.19
MutPred		0.20		Gain of solvent accessibility (P = 0.0367);Gain of solvent accessibility (P = 0.0367);Gain of solvent accessibility (P = 0.0367);
MVP		0.33
MPC		0.41
ClinPred		0.59	D
GERP RS		5.7
Varity_R		0.36

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

Other links and lift over

dbSNP: rs776802337; hg19: chrX-14871170;