16-89737615-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_000135.4(FANCA):c.*986G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.019 in 1,096,920 control chromosomes in the GnomAD database, including 763 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.044 (347 hom., cov: 32)
  • Exomes 𝑓: 0.015 (416 hom.)
• Consequence: FANCA NM_000135.4 3_prime_UTR
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.127

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

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BP6: Variant 16-89737615-C-T is Benign according to our data. Variant chr16-89737615-C-T is described in ClinVar as [Benign]. Clinvar id is 321304.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.116 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FANCA	NM_000135.4	c.*986G>A		3_prime_UTR_variant	43/43	ENST00000389301.8
ZNF276	NM_001113525.2	c.1475-191C>T		intron_variant		ENST00000443381.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FANCA	ENST00000389301.8	c.*986G>A		3_prime_UTR_variant	43/43	1	NM_000135.4	P1
ZNF276	ENST00000443381.7	c.1475-191C>T		intron_variant		1	NM_001113525.2	P2

Frequencies

GnomAD3 genomes AF: 0.0435 AC: 6612 AN: 152098 Hom.: 343 Cov.: 32

Gnomad AFR AF: 0.119

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0181

Gnomad ASJ AF: 0.0213

Gnomad EAS AF: 0.00597

Gnomad SAS AF: 0.0927

Gnomad FIN AF: 0.0105

Gnomad MID AF: 0.0318

Gnomad NFE AF: 0.00971

Gnomad OTH AF: 0.0374

GnomAD4 exome AF: 0.0151 AC: 14225 AN: 944706 Hom.: 416 Cov.: 12 AF XY: 0.0169 AC XY: 7892 AN XY: 466666

Gnomad4 AFR exome AF: 0.117

Gnomad4 AMR exome AF: 0.0137

Gnomad4 ASJ exome AF: 0.0182

Gnomad4 EAS exome AF: 0.00860

Gnomad4 SAS exome AF: 0.0812

Gnomad4 FIN exome AF: 0.0121

Gnomad4 NFE exome AF: 0.00710

Gnomad4 OTH exome AF: 0.0208

GnomAD4 genome AF: 0.0435 AC: 6626 AN: 152214 Hom.: 347 Cov.: 32 AF XY: 0.0434 AC XY: 3233 AN XY: 74434

Gnomad4 AFR AF: 0.119

Gnomad4 AMR AF: 0.0180

Gnomad4 ASJ AF: 0.0213

Gnomad4 EAS AF: 0.00598

Gnomad4 SAS AF: 0.0926

Gnomad4 FIN AF: 0.0105

Gnomad4 NFE AF: 0.00972

Gnomad4 OTH AF: 0.0370

Alfa AF: 0.0227 Hom.: 30

Bravo AF: 0.0454

Asia WGS AF: 0.0540 AC: 186 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Fanconi anemia complementation group A Benign:1

Benign, 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 and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
Cadd	Benign	1.7
Dann	Benign	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: rs16966023; hg19: chr16-89804023;