chr16-3602236-G-A

Position:

chr16-3602236-G-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 2P and 3B. PM2BP4_ModerateBS1_Supporting

The NM_032444.4(SLX4):c.832C>T(p.Arg278Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000143 in 1,614,170 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

SLX4
NM_032444.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:1

Conservation

PhyloP100: 1.01

Variant links:

Genes affected

SLX4 (HGNC:23845): (SLX4 structure-specific endonuclease subunit) This gene encodes a protein that functions as an assembly component of multiple structure-specific endonucleases. These endonuclease complexes are required for repair of specific types of DNA lesions and critical for cellular responses to replication fork failure. Mutations in this gene were found in patients with Fanconi anemia. [provided by RefSeq, Sep 2016]

SLX4 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.20767957).

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000158 (24/152324) while in subpopulation AMR AF= 0.000719 (11/15302). AF 95% confidence interval is 0.000403. There are 0 homozygotes in gnomad4. There are 11 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
SLX4	NM_032444.4 linkuse as main transcript	c.832C>T	p.Arg278Trp	missense_variant	4/15	ENST00000294008.4	NP_115820.2
SLX4	XM_024450471.2 linkuse as main transcript	c.832C>T	p.Arg278Trp	missense_variant	4/15		XP_024306239.1
SLX4	XM_011522715.4 linkuse as main transcript	c.832C>T	p.Arg278Trp	missense_variant	4/15		XP_011521017.1
SLX4	XR_007064923.1 linkuse as main transcript	n.1481C>T		non_coding_transcript_exon_variant	4/13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLX4	ENST00000294008.4 linkuse as main transcript	c.832C>T	p.Arg278Trp	missense_variant	4/15	5	NM_032444.4	ENSP00000294008	P1	Q8IY92-1
SLX4	ENST00000466154.5 linkuse as main transcript	n.1127C>T		non_coding_transcript_exon_variant	3/7	1
SLX4	ENST00000486524.1 linkuse as main transcript	n.1460C>T		non_coding_transcript_exon_variant	4/4	2
SLX4	ENST00000697858.1 linkuse as main transcript	n.173C>T		non_coding_transcript_exon_variant	2/3

Frequencies

GnomAD3 genomes

AF:

0.000151

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000720

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000231

AC:

AN:

251450

Hom.:

AF XY:

0.000169

AC XY:

AN XY:

135908

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.000867

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000202

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000142

AC:

207

AN:

1461846

Hom.:

Cov.:

AF XY:

0.000133

AC XY:

AN XY:

727216

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000143

Gnomad4 OTH exome

AF:

0.000265

GnomAD4 genome

AF:

0.000158

AC:

AN:

152324

Hom.:

Cov.:

AF XY:

0.000148

AC XY:

AN XY:

74478

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.000719

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000176

Hom.:

Bravo

AF:

0.000283

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000455

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000165

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.000296

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Fanconi anemia

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Oct 19, 2022	This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 278 of the SLX4 protein (p.Arg278Trp). This variant is present in population databases (rs141597706, gnomAD 0.08%). This missense change has been observed in individual(s) with cancer (PMID: 23211700, 30306255, 30613976). ClinVar contains an entry for this variant (Variation ID: 456338). 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: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). 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. -
Uncertain significance, criteria provided, single submitter	curation	Sema4, Sema4	Dec 17, 2021	- -

Fanconi anemia complementation group P

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Fulgent Genetics, Fulgent Genetics	Feb 16, 2022	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Nov 18, 2019	- -

not provided

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden	Nov 03, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Sep 01, 2023	SLX4: BP4 -

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Nov 03, 2022

Variant summary: BTBD12 (also known as SLX4) c.832C>T (p.Arg278Trp) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.00021 in 282844 control chromosomes, predominantly at a frequency of 0.00085 within the Latino subpopulation in the gnomAD database. c.832C>T has been reported in the literature in individuals affected with breast/ovarian cancer and with renal cancer (e.g. de Garibay_2013, Bonache_2018, Lee_2018, Rizzolo_2019). These reports do not provide unequivocal conclusions about association of the variant with Fanconi Anemia. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. Three ClinVar submitters (evaluation after 2014) cite the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.49

BayesDel_noAF

Benign

-0.57

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.17

Eigen

Benign

-0.045

Eigen_PC

Benign

-0.14

FATHMM_MKL

Benign

0.15

LIST_S2

Benign

0.66

M_CAP

Pathogenic

0.76

MetaRNN

Benign

0.21

MetaSVM

Benign

-0.89

MutationAssessor

Benign

1.8

MutationTaster

Benign

1.0

PrimateAI

Benign

0.22

PROVEAN

Uncertain

-2.8

REVEL

Benign

0.10

Sift

Uncertain

0.0050

Sift4G

Uncertain

0.0060

Polyphen

1.0

Vest4

0.32

MVP

0.28

MPC

0.25

ClinPred

0.17

GERP RS

4.8

Varity_R

0.060

gMVP

0.17

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over