rs1216426444

chr16-89764940-G-Achr16-89764940-G-Cchr16-89764940-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM1 PM2 PP3

The NM_000135.4(FANCA):c.2728C>T(p.Leu910Phe) 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 pathogenic 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. L910I) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FANCA NM_000135.4 missense
• Clinical Significance: Conflicting classifications of pathogenicity no assertion criteria provided P:1 U:1
• Conservation: PhyloP100: 2.04

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 10 uncertain in NM_000135.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.756

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FANCA	NM_000135.4	c.2728C>T	p.Leu910Phe	missense_variant	28/43	ENST00000389301.8
FANCA	NM_001286167.3	c.2728C>T	p.Leu910Phe	missense_variant	28/43

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FANCA	ENST00000389301.8	c.2728C>T	p.Leu910Phe	missense_variant	28/43	1	NM_000135.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:1 Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

Fanconi anemia complementation group A Pathogenic:1

Likely pathogenic, no assertion criteria provided

clinical testing

Department of Pathology and Genetics, University of Gothenburg

Jan 01, 2017

- -

Neuroblastoma Uncertain:1

Uncertain significance, no assertion criteria provided

clinical testing

Department of Pathology and Genetics, University of Gothenburg

Jan 01, 2017

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.47
BayesDel_addAF	Pathogenic	0.21	D
BayesDel_noAF	Uncertain	0.070
Cadd	Uncertain	24
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.67	D;.
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.37
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.77	T;T
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.76	D;D
MetaSVM	Uncertain	0.78	D
MutationAssessor	Uncertain	2.1	M;M
MutationTaster	Benign	0.95	D;D
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-3.0	D;D
REVEL	Uncertain	0.58
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;.
Vest4		0.69
MutPred		0.32		Loss of MoRF binding (P = 0.1218);Loss of MoRF binding (P = 0.1218);
MVP		0.97
ClinPred		0.97	D
GERP RS		4.0
Varity_R		0.43
gMVP		0.49

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

Other links and lift over

dbSNP: rs1216426444; hg19: chr16-89831348; COSMIC: COSV59796622; COSMIC: COSV59796622;