chr16-13922083-G-T

Variant names:

• chr16-13922083-G-T
• rs371487368
• NM_005236.3:c.260G>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_005236.3(ERCC4):​c.260G>T​(p.Arg87Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,496 control chromosomes in the GnomAD database, with no homozygous occurrence. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R87H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ERCC4 NM_005236.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.32
• Publications: 0 publications found

Genes affected

ERCC4 (HGNC:3436): (ERCC excision repair 4, endonuclease catalytic subunit) The protein encoded by this gene forms a complex with ERCC1 and is involved in the 5' incision made during nucleotide excision repair. This complex is a structure specific DNA repair endonuclease that interacts with EME1. Defects in this gene are a cause of xeroderma pigmentosum complementation group F (XP-F), or xeroderma pigmentosum VI (XP6).[provided by RefSeq, Mar 2009]

LOC105371093 (HGNC:):

RPS26P52 (HGNC:36863): (ribosomal protein S26 pseudogene 52)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005236.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ERCC4	NM_005236.3	MANE Select	c.260G>T	p.Arg87Leu	missense	Exon 2 of 11	NP_005227.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ERCC4	ENST00000311895.8	TSL:1 MANE Select	c.260G>T	p.Arg87Leu	missense	Exon 2 of 11	ENSP00000310520.7
	ERCC4	ENST00000575156.5	TSL:1	c.260G>T	p.Arg87Leu	missense	Exon 2 of 6	ENSP00000459933.1
	ERCC4	ENST00000682617.1		c.260G>T	p.Arg87Leu	missense	Exon 2 of 12	ENSP00000507912.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461496 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727068

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33466

American (AMR) AF: 0.00 AC: 0 AN: 44714

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39680

South Asian (SAS) AF: 0.00 AC: 0 AN: 86234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53410

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111728

Other (OTH) AF: 0.00 AC: 0 AN: 60366

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.30
BayesDel_addAF	Benign	-0.051	T
BayesDel_noAF	Benign	-0.31
CADD	Benign	22
DANN	Uncertain	0.98
DEOGEN2	Benign	0.10	T
Eigen	Benign	-0.23
Eigen_PC	Benign	-0.029
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.015	T
MetaRNN	Uncertain	0.57	D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.61	N
PhyloP100		5.3
PrimateAI	Benign	0.42	T
PROVEAN	Benign	0.90	N
REVEL	Benign	0.099
Sift	Benign	0.42	T
Sift4G	Benign	0.54	T
Polyphen		0.031	B
Vest4		0.69
MutPred		0.52		Loss of disorder (P = 0.0365)
MVP		0.76
MPC		0.11
ClinPred		0.67	D
GERP RS		4.4
Varity_R		0.16
gMVP		0.70

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: rs371487368; hg19: chr16-14015940;