3-10028692-A-T

Variant summary

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

The NM_001018115.3(FANCD2):c.35A>T(p.Asp12Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 32)
• Consequence: FANCD2 NM_001018115.3 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: 0.981

Genes affected

FANCD2 (HGNC:3585): (FA complementation group D2) 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 D2. This protein is monoubiquinated in response to DNA damage, resulting in its localization to nuclear foci with other proteins (BRCA1 AND BRCA2) involved in homology-directed DNA repair. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 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=0.09217137).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FANCD2	NM_001018115.3	c.35A>T	p.Asp12Val	missense_variant	2/44	ENST00000675286.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FANCD2	ENST00000675286.1	c.35A>T	p.Asp12Val	missense_variant	2/44		NM_001018115.3	P2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Fanconi anemia complementation group D2 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Sep 25, 2019

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

Fanconi anemia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Feb 24, 2022

This variant is not present in population databases (gnomAD no frequency). 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. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). ClinVar contains an entry for this variant (Variation ID: 998267). This variant has not been reported in the literature in individuals affected with FANCD2-related conditions. This sequence change replaces aspartic acid, which is acidic and polar, with valine, which is neutral and non-polar, at codon 12 of the FANCD2 protein (p.Asp12Val). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.091
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.43
Cadd	Benign	19
Dann	Uncertain	0.98
Eigen	Benign	-0.48
Eigen_PC	Benign	-0.46
FATHMM_MKL	Benign	0.31	N
LIST_S2	Benign	0.80	T;T;.;T;T
M_CAP	Benign	0.016	T
MetaRNN	Benign	0.092	T;T;T;T;T
MetaSVM	Benign	-0.94	T
MutationAssessor	Uncertain	2.4	M;M;M;M;.
MutationTaster	Benign	0.74	D;D;D;D;D
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.5	N;N;N;N;.
REVEL	Benign	0.054
Sift	Uncertain	0.0050	D;D;D;D;.
Sift4G	Benign	0.18	T;T;T;D;.
Polyphen		0.029, 0.96	.;B;B;D;.
Vest4		0.25
MutPred		0.17		Gain of MoRF binding (P = 0.0123);Gain of MoRF binding (P = 0.0123);Gain of MoRF binding (P = 0.0123);Gain of MoRF binding (P = 0.0123);Gain of MoRF binding (P = 0.0123);
MVP		0.69
MPC		0.43
ClinPred		0.76	D
GERP RS		1.4
Varity_R		0.093
gMVP		0.30

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: rs2086517367; hg19: chr3-10070376;