rs137913973

Positions:

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 4P and 5B. PM1PM2BP4_StrongBP6

The NM_000135.4(FANCA):c.2267G>C(p.Arg756Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000483 in 1,593,434 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R756C) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

FANCA
NM_000135.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3B:2

Conservation

PhyloP100: -1.69

Variant links:

Genes affected

FANCA (HGNC:3582): (FA complementation group A) The Fanconi anemia complementation group (FANC) currently includes FANCA, FANCB, FANCC, FANCD1 (also called BRCA2), FANCD2, FANCE, FANCF, FANCG, FANCI, FANCJ (also called BRIP1), FANCL, FANCM and FANCN (also called PALB2). The previously defined group FANCH is the same as FANCA. Fanconi anemia is a genetically heterogeneous recessive disorder characterized by cytogenetic instability, hypersensitivity to DNA crosslinking agents, increased chromosomal breakage, and defective DNA repair. The members of the Fanconi anemia complementation group do not share sequence similarity; they are related by their assembly into a common nuclear protein complex. This gene encodes the protein for complementation group A. Alternative splicing results in multiple transcript variants encoding different isoforms. Mutations in this gene are the most common cause of Fanconi anemia. [provided by RefSeq, Jul 2008]

FANCA links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 8 uncertain in NM_000135.4

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.031941563).

BP6

Variant 16-89770215-C-G is Benign according to our data. Variant chr16-89770215-C-G is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 526342.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=2, Likely_benign=2}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FANCA	NM_000135.4 linkuse as main transcript	c.2267G>C	p.Arg756Pro	missense_variant	25/43	ENST00000389301.8
FANCA	NM_001286167.3 linkuse as main transcript	c.2267G>C	p.Arg756Pro	missense_variant	25/43

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FANCA	ENST00000389301.8 linkuse as main transcript	c.2267G>C	p.Arg756Pro	missense_variant	25/43	1	NM_000135.4	P1	O15360-1

Frequencies

GnomAD3 genomes

AF:

0.000256

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000917

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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

GnomAD3 exomes

AF:

0.0000610

AC:

AN:

212986

Hom.:

AF XY:

0.0000524

AC XY:

AN XY:

114528

show subpopulations

Gnomad AFR exome

AF:

0.000923

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000615

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000257

AC:

AN:

1441156

Hom.:

Cov.:

AF XY:

0.0000210

AC XY:

AN XY:

714640

show subpopulations

Gnomad4 AFR exome

AF:

0.000900

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000513

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.07e-7

Gnomad4 OTH exome

AF:

0.0000670

GnomAD4 genome

AF:

0.000263

AC:

AN:

152278

Hom.:

Cov.:

AF XY:

0.000255

AC XY:

AN XY:

74450

show subpopulations

Gnomad4 AFR

AF:

0.000938

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000214

Hom.:

Bravo

AF:

0.000302

ESP6500AA

AF:

0.000457

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000746

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Fanconi anemia

Uncertain:1Benign:1

Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 09, 2024	- -
Uncertain significance, no assertion criteria provided	clinical testing	Natera, Inc.	Jan 23, 2020	- -

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Mayo Clinic Laboratories, Mayo Clinic	Nov 18, 2022	PM2 -
Likely benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Oct 28, 2022	- -

Fanconi anemia complementation group A

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Dec 22, 2020

This variant was determined to be of uncertain significance according to ACMG Guidelines, 2015 [PMID:25741868]. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.19

CADD

Benign

0.76

DANN

Benign

0.77

DEOGEN2

Benign

0.27

T;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.053

LIST_S2

Benign

0.47

T;T

M_CAP

Uncertain

0.10

MetaRNN

Benign

0.032

T;T

MetaSVM

Benign

-0.75

MutationAssessor

Benign

1.2

L;L

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.31

PROVEAN

Benign

-1.5

N;N

REVEL

Uncertain

0.52

Sift

Benign

0.036

D;D

Sift4G

Benign

0.062

T;T

Polyphen

0.0070

B;.

Vest4

0.40

MVP

0.70

ClinPred

0.048

GERP RS

-9.6

Varity_R

0.34

gMVP

0.37

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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