NM_000135.4:c.4075G>C

Variant names:

• chr16-89739225-C-G
• rs1555533313
• NM_000135.4:c.4075G>C

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1 PM2 PM5

The NM_000135.4(FANCA):​c.4075G>C​(p.Asp1359His) variant causes a missense 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 Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D1359Y) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 33)
• Consequence: FANCA NM_000135.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.765
• 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]

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]

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM1: In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 1 benign, 25 uncertain in NM_000135.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr16-89739225-C-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 554319.Status of the report is no_assertion_criteria_provided, 0 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.4075G>C	p.Asp1359His	missense	Exon 41 of 43	NP_000126.2	O15360-1
	ZNF276	NM_001113525.2	MANE Select	c.*979C>G		3_prime_UTR	Exon 11 of 11	NP_001106997.1	Q8N554-1
	FANCA	NM_001286167.3		c.4075G>C	p.Asp1359His	missense	Exon 41 of 43	NP_001273096.1	O15360-3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FANCA	ENST00000389301.8	TSL:1 MANE Select	c.4075G>C	p.Asp1359His	missense	Exon 41 of 43	ENSP00000373952.3	O15360-1
	ZNF276	ENST00000443381.7	TSL:1 MANE Select	c.*979C>G		3_prime_UTR	Exon 11 of 11	ENSP00000415836.2	Q8N554-1
	ZNF276	ENST00000289816.9	TSL:1	c.*979C>G		3_prime_UTR	Exon 11 of 11	ENSP00000289816.5	Q8N554-2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Fanconi anemia (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.20
BayesDel_addAF	Uncertain	0.15	D
BayesDel_noAF	Uncertain	-0.030
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.56	D
Eigen	Benign	0.052
Eigen_PC	Benign	-0.11
FATHMM_MKL	Benign	0.66	D
LIST_S2	Benign	0.78	T
M_CAP	Uncertain	0.11	D
MetaRNN	Uncertain	0.54	D
MetaSVM	Uncertain	0.18	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		0.77
PrimateAI	Benign	0.42	T
PROVEAN	Uncertain	-3.3	D
REVEL	Uncertain	0.54
Sift	Uncertain	0.019	D
Sift4G	Uncertain	0.012	D
Polyphen		1.0	D
Vest4		0.43
MutPred		0.66		Loss of ubiquitination at K1363 (P = 0.1343)
MVP		0.95
ClinPred		0.83	D
GERP RS		3.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.13
gMVP		0.42
Mutation Taster		=58/42	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs1555533313; hg19: chr16-89805633;