rs753304968

Positions:

• chr6-35452576-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_021922.3(FANCE):​c.31G>A​(p.Ala11Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000424 in 1,333,328 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

• Frequency:
  • Genomes: 𝑓 0.00025 (0 hom., cov: 33)
  • Exomes 𝑓: 0.00045 (0 hom.)
• Consequence: FANCE NM_021922.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:4
• Conservation: PhyloP100: -0.344

Genes affected

FANCE (HGNC:3586): (FA complementation group E) 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 E. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.028799146).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
FANCE	NM_021922.3	c.31G>A	p.Ala11Thr	missense_variant	1/10	ENST00000229769.3	NP_068741.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
FANCE	ENST00000229769.3	c.31G>A	p.Ala11Thr	missense_variant	1/10	1	NM_021922.3	ENSP00000229769.2
FANCE	ENST00000696264.1	c.31G>A	p.Ala11Thr	missense_variant	1/8			ENSP00000512511.1
FANCE	ENST00000648059.1	n.31G>A		non_coding_transcript_exon_variant	1/11			ENSP00000497902.1
FANCE	ENST00000696265.1	n.31G>A		non_coding_transcript_exon_variant	1/9			ENSP00000512512.1

Frequencies

GnomAD3 genomes AF: 0.000250 AC: 38 AN: 151962 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000725

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000328

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000378

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000383

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000137 AC: 8 AN: 58348 Hom.: 0 AF XY: 0.0000580 AC XY: 2 AN XY: 34492

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000297

Gnomad ASJ exome AF: 0.000186

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.000266

Gnomad NFE exome AF: 0.000137

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.000446 AC: 527 AN: 1181254 Hom.: 0 Cov.: 30 AF XY: 0.000394 AC XY: 226 AN XY: 574032

Gnomad4 AFR exome AF: 0.0000803

Gnomad4 AMR exome AF: 0.000507

Gnomad4 ASJ exome AF: 0.0000513

Gnomad4 EAS exome AF: 0.0000370

Gnomad4 SAS exome AF: 0.0000229

Gnomad4 FIN exome AF: 0.000276

Gnomad4 NFE exome AF: 0.000504

Gnomad4 OTH exome AF: 0.000273

GnomAD4 genome AF: 0.000250 AC: 38 AN: 152074 Hom.: 0 Cov.: 33 AF XY: 0.000215 AC XY: 16 AN XY: 74356

Gnomad4 AFR AF: 0.0000723

Gnomad4 AMR AF: 0.000327

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000378

Gnomad4 NFE AF: 0.000383

Gnomad4 OTH AF: 0.00

Alfa AF: 0.000486 Hom.: 0

Bravo AF: 0.000193

ExAC AF: 0.0000774 AC: 3

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:4

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Fanconi anemia complementation group E Uncertain:3

Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -
Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 24, 2022	This sequence change replaces alanine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 11 of the FANCE protein (p.Ala11Thr). This variant is present in population databases (rs753304968, gnomAD 0.04%). This variant has not been reported in the literature in individuals affected with FANCE-related conditions. ClinVar contains an entry for this variant (Variation ID: 408158). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The threonine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Mar 15, 2022	- -

FANCE-related disorder Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 24, 2024

The FANCE c.31G>A variant is predicted to result in the amino acid substitution p.Ala11Thr. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.035% of alleles in individuals of European (Non-Finnish) descent in gnomAD. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.079
BayesDel_addAF	Benign	-0.46	T
BayesDel_noAF	Benign	-0.53
CADD	Benign	7.5
DANN	Uncertain	0.98
DEOGEN2	Benign	0.072	T
Eigen	Benign	-1.2
Eigen_PC	Benign	-1.3
FATHMM_MKL	Benign	0.038	N
LIST_S2	Benign	0.39	T
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.029	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.2	L
PrimateAI	Uncertain	0.75	T
PROVEAN	Benign	-0.63	N
REVEL	Benign	0.028
Sift	Uncertain	0.022	D
Sift4G	Uncertain	0.016	D
Polyphen		0.0010	B
Vest4		0.075
MutPred		0.080		Gain of glycosylation at A11 (P = 0.0162);
MVP		0.39
MPC		0.10
ClinPred		0.052	T
GERP RS		-3.7
Varity_R		0.055
gMVP		0.20

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: rs753304968; hg19: chr6-35420353;