rs182657062

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PM2PP3_ModeratePP5_Very_Strong

The NM_000135.4(FANCA):c.3971C>T(p.Pro1324Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000232 in 1,551,320 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P1324S) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000024 ( 0 hom. )

Consequence

FANCA
NM_000135.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:7

Conservation

PhyloP100: 5.48

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:

ZNF276 (HGNC:23330): (zinc finger protein 276) Enables sequence-specific double-stranded DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Located in kinetochore. [provided by Alliance of Genome Resources, Apr 2022]

ZNF276 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 12 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.876

PP5

Variant 16-89739517-G-A is Pathogenic according to our data. Variant chr16-89739517-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 430085.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr16-89739517-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FANCA	NM_000135.4 linkuse as main transcript	c.3971C>T	p.Pro1324Leu	missense_variant	40/43	ENST00000389301.8
ZNF276	NM_001113525.2 linkuse as main transcript	c.*1271G>A		3_prime_UTR_variant	11/11	ENST00000443381.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FANCA	ENST00000389301.8 linkuse as main transcript	c.3971C>T	p.Pro1324Leu	missense_variant	40/43	1	NM_000135.4	P1	O15360-1
ZNF276	ENST00000443381.7 linkuse as main transcript	c.*1271G>A		3_prime_UTR_variant	11/11	1	NM_001113525.2	P2	Q8N554-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152214

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000129

AC:

AN:

155558

Hom.:

AF XY:

0.0000244

AC XY:

AN XY:

82064

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000882

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000168

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000236

AC:

AN:

1398988

Hom.:

Cov.:

AF XY:

0.0000174

AC XY:

AN XY:

690038

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000559

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000287

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152332

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000445

Hom.:

ExAC

AF:

0.0000120

AC:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Fanconi anemia complementation group A

Pathogenic:5

Likely pathogenic, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Dec 27, 2019	- -
Likely pathogenic, criteria provided, single submitter	clinical testing	Counsyl	Apr 17, 2017	- -
Pathogenic, no assertion criteria provided	curation	Leiden Open Variation Database	Feb 28, 2020	Curator: Arleen D. Auerbach. Submitter to LOVD: Arleen D. Auerbach. -
Pathogenic, criteria provided, single submitter	clinical testing	Baylor Genetics	Jul 04, 2023	- -
Pathogenic, criteria provided, single submitter	clinical testing	3billion	May 22, 2022	The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: 0.001%). Functional studies provide strong evidence of the variant having a damaging effect on the gene or gene product (PMID: 12444097). In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.71; 3Cnet: 0.29). Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000430085). The variant has been reported to be in trans with a pathogenic variant as either compound heterozygous or homozygous in at least 2 similarly affected unrelated individuals (PMID: 10521298, 17924555, 23973728). Therefore, this variant is classified as pathogenic according to the recommendation of ACMG/AMP guideline. -

Fanconi anemia

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Dec 21, 2023

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 1324 of the FANCA protein (p.Pro1324Leu). This variant is present in population databases (rs182657062, gnomAD 0.01%). This missense change has been observed in individual(s) with Fanconi anemia (PMID: 10521298, 17924555, 23973728, 24584348). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 430085). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is expected to disrupt FANCA protein function with a positive predictive value of 80%. For these reasons, this variant has been classified as Pathogenic. -

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Apr 08, 2022

Published functional studies demonstrate a damaging effect, showing that P1324L resulted in mild impairment of FANCA function (Adachi et al., 2002).; Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 17924555, 25525159, 31589614, 33270637, 23973728, 10521298, 32054657, 24584348, 12444097) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.24

BayesDel_addAF

Uncertain

0.15

BayesDel_noAF

Pathogenic

0.19

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Uncertain

0.51

D;.;T

Eigen

Uncertain

0.52

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.87

D;D;D

M_CAP

Uncertain

0.17

MetaRNN

Pathogenic

0.88

D;D;D

MetaSVM

Uncertain

0.48

MutationAssessor

Uncertain

2.5

M;M;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Benign

0.36

PROVEAN

Pathogenic

-4.4

D;D;D

REVEL

Pathogenic

0.71

Sift

Uncertain

0.0040

D;D;D

Sift4G

Uncertain

0.0070

D;D;D

Polyphen

1.0

D;.;.

Vest4

0.78

MVP

0.94

ClinPred

0.95

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.19

gMVP

0.36

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