rs61893867

Variant names:

• chr11-65867024-C-T
• rs61893867
• NM_016938.5:c.1226G>A

Variant summary

Our verdict is Likely benign. The variant received -1 ACMG points: 0P and 1B. BP4

The NM_016938.5(EFEMP2):​c.1226G>A​(p.Arg409Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000452 in 1,614,036 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. 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. R409W) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000049 (0 hom.)
• Consequence: EFEMP2 NM_016938.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2 O:1
• Conservation: PhyloP100: 2.54
• Publications: 1 publications found

Genes affected

EFEMP2 (HGNC:3219): (EGF containing fibulin extracellular matrix protein 2) A large number of extracellular matrix proteins have been found to contain variations of the epidermal growth factor (EGF) domain and have been implicated in functions as diverse as blood coagulation, activation of complement and determination of cell fate during development. The protein encoded by this gene contains four EGF2 domains and six calcium-binding EGF2 domains. This gene is necessary for elastic fiber formation and connective tissue development. Defects in this gene are cause of an autosomal recessive cutis laxa syndrome. Alternatively spliced transcript variants have been identified for this gene. [provided by RefSeq, Jan 2011]

MUS81 (HGNC:29814): (MUS81 structure-specific endonuclease subunit) This gene encodes a structure-specific endonuclease which belongs to the XPF/MUS81 endonuclease family and plays a critical role in the resolution of recombination intermediates during DNA repair after inter-strand cross-links, replication fork collapse, and DNA double-strand breaks. The encoded protein associates with one of two closely related essential meiotic endonuclease proteins (EME1 or EME2) to form a complex that processes DNA secondary structures. It contains an N-terminal DEAH helicase domain, an excision repair cross complementation group 4 (ERCC4) endonuclease domain, and two tandem C-terminal helix-hairpin-helix domains. Mice with a homozygous knockout of the orthologous gene have significant meiotic defects including the failure to repair a subset of DNA double strand breaks. [provided by RefSeq, Jun 2017]

ACMG classification

Our verdict: Likely_benign. The variant received -1 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.30977187).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_016938.5. 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
	EFEMP2	NM_016938.5	MANE Select	c.1226G>A	p.Arg409Gln	missense	Exon 11 of 11	NP_058634.4	O95967
	EFEMP2	NR_037718.2		n.1351G>A		non_coding_transcript_exon	Exon 11 of 12
	MUS81	NR_146598.2		n.1813-233C>T		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	EFEMP2	ENST00000307998.11	TSL:1 MANE Select	c.1226G>A	p.Arg409Gln	missense	Exon 11 of 11	ENSP00000309953.6	O95967
	EFEMP2	ENST00000531972.5	TSL:1	n.1226G>A		non_coding_transcript_exon	Exon 11 of 12	ENSP00000435295.1	O95967
	EFEMP2	ENST00000907927.1		c.1445G>A	p.Arg482Gln	missense	Exon 12 of 12	ENSP00000577986.1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152182 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000483

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000279 AC: 7 AN: 251214 AF XY: 0.0000221

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000867

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000264

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000486 AC: 71 AN: 1461854 Hom.: 0 Cov.: 31 AF XY: 0.0000509 AC XY: 37 AN XY: 727230

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.0000894 AC: 4 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.0000383 AC: 1 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000464 AC: 4 AN: 86258

European-Finnish (FIN) AF: 0.0000375 AC: 2 AN: 53384

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

European-Non Finnish (NFE) AF: 0.0000513 AC: 57 AN: 1112008

Other (OTH) AF: 0.0000331 AC: 2 AN: 60396

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152182 Hom.: 0 Cov.: 33 AF XY: 0.0000269 AC XY: 2 AN XY: 74346

African (AFR) AF: 0.0000483 AC: 2 AN: 41446

American (AMR) AF: 0.00 AC: 0 AN: 15284

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5192

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10614

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000564 Hom.: 0

ExAC AF: 0.0000247 AC: 3

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Cardiovascular phenotype (1)
-	1	-	Cutis laxa, autosomal recessive, type 1B (1)
-	-	-	Cutis laxa, autosomal recessive, type 1A (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.090
BayesDel_addAF	Benign	-0.092	T
BayesDel_noAF	Benign	-0.17
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
Eigen	Benign	-0.16
Eigen_PC	Benign	0.071
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.89	D
M_CAP	Benign	0.035	D
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-0.61	T
MutationAssessor	Benign	0.38	N
PhyloP100		2.5
PrimateAI	Uncertain	0.68	T
PROVEAN	Uncertain	-2.7	D
REVEL	Benign	0.26
Sift	Benign	0.098	T
Sift4G	Benign	0.14	T
Polyphen		0.0030	B
Vest4		0.21
MutPred		0.51		Gain of sheet (P = 0.0221)
MVP		0.83
MPC		0.43
ClinPred		0.45	T
GERP RS		5.4
Varity_R		0.19
gMVP		0.37
Mutation Taster		=90/10	polymorphism

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: rs61893867; hg19: chr11-65634495; COSMIC: COSV57259524; COSMIC: COSV57259524;