rs774448881

Variant names:

• chr16-89810772-G-A
• rs774448881
• NM_000135.4:c.457C>T

Your query was ambiguous. Multiple possible variants found:

• chr16-89810772-G-A
• chr16-89810772-G-C
• chr16-89810772-G-T

Variant summary

Our verdict is Pathogenic. The variant received 18 ACMG points: 18P and 0B. PVS1 PM2 PP5_Very_Strong

The NM_000135.4(FANCA):​c.457C>T​(p.Gln153*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★★). Synonymous variant affecting the same amino acid position (i.e. Q153Q) has been classified as Likely benign. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FANCA NM_000135.4 stop_gained
• Clinical Significance: Pathogenic criteria provided, multiple submitters, no conflicts P:2
• Conservation: PhyloP100: 0.979
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• Fanconi anemia complementation group A

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae), ClinGen, G2P, Myriad Women’s Health
• Fanconi anemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 18 ACMG points.

• PVS1: Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 16-89810772-G-A is Pathogenic according to our data. Variant chr16-89810772-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 1459184.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000135.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FANCA	NM_000135.4	MANE Select	c.457C>T	p.Gln153*	stop_gained	Exon 5 of 43	NP_000126.2	O15360-1
	FANCA	NM_001286167.3		c.457C>T	p.Gln153*	stop_gained	Exon 5 of 43	NP_001273096.1	O15360-3
	FANCA	NM_001018112.3		c.457C>T	p.Gln153*	stop_gained	Exon 5 of 11	NP_001018122.1	O15360-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FANCA	ENST00000389301.8	TSL:1 MANE Select	c.457C>T	p.Gln153*	stop_gained	Exon 5 of 43	ENSP00000373952.3	O15360-1
	FANCA	ENST00000563673.5	TSL:1	c.457C>T	p.Gln153*	stop_gained	Exon 5 of 10	ENSP00000456443.1	H3BRX3
	FANCA	ENST00000534992.5	TSL:1	c.457C>T	p.Gln153*	stop_gained	Exon 5 of 11	ENSP00000443675.1	F5H8D5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Pathogenic

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
1	-	-	Fanconi anemia (1)
1	-	-	Fanconi anemia complementation group A (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	34
DANN	Uncertain	0.99
Eigen	Benign	-0.12
Eigen_PC	Benign	-0.45
FATHMM_MKL	Benign	0.058	N
PhyloP100		0.98
Vest4		0.93
GERP RS		1.7
Mutation Taster		=1/199	disease causing (fs/PTC)

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

Other links and lift over

dbSNP: rs774448881; hg19: chr16-89877180; COSMIC: COSV107492225; COSMIC: COSV107492225;