Genetic Variant EGFLAM:p.Leu666Phe (chr5-38427196-G-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_152403.4(EGFLAM):c.1998G>C(p.Leu666Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000112 in 1,614,186 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. L666V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000072 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000048 ( 0 hom. )

Consequence

EGFLAM
NM_152403.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.77

Variant links:

Genes affected

EGFLAM (HGNC:26810): (EGF like, fibronectin type III and laminin G domains) Predicted to enable calcium ion binding activity and glycosaminoglycan binding activity. Predicted to be involved in animal organ morphogenesis and tissue development. Predicted to act upstream of or within extracellular matrix organization; peptide cross-linking via chondroitin 4-sulfate glycosaminoglycan; and positive regulation of cell-substrate adhesion. Part of cell surface. [provided by Alliance of Genome Resources, Apr 2022]

EGFLAM links:

EGFLAM-AS1 (HGNC:41169): (EGFLAM antisense RNA 1)

EGFLAM-AS1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
EGFLAM	NM_152403.4 link	c.1998G>C	p.Leu666Phe	missense_variant	Exon 14 of 22	ENST00000322350.10	NP_689616.2	Q63HQ2-2
EGFLAM	NM_001205301.2 link	c.1998G>C	p.Leu666Phe	missense_variant	Exon 14 of 23		NP_001192230.1	Q63HQ2-1
EGFLAM	NM_182798.3 link	c.1296G>C	p.Leu432Phe	missense_variant	Exon 9 of 17		NP_877950.1	Q63HQ2-4
EGFLAM-AS1	NR_046737.1 link	n.181C>G		non_coding_transcript_exon_variant	Exon 1 of 2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
EGFLAM	ENST00000322350.10 link	c.1998G>C	p.Leu666Phe	missense_variant	Exon 14 of 22	1	NM_152403.4	ENSP00000313084.5		Q63HQ2-2

Frequencies

GnomAD3 genomes

AF:

0.0000723

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

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

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251210

Hom.:

AF XY:

0.00000737

AC XY:

AN XY:

135760

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.0000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000479

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727244

show subpopulations

Gnomad4 AFR exome

AF:

0.000149

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000722

AC:

AN:

152302

Hom.:

Cov.:

AF XY:

0.0000671

AC XY:

AN XY:

74476

show subpopulations

Gnomad4 AFR

AF:

0.000265

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000567

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 27, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1998G>C (p.L666F) alteration is located in exon 14 (coding exon 14) of the EGFLAM gene. This alteration results from a G to C substitution at nucleotide position 1998, causing the leucine (L) at amino acid position 666 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.22

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Uncertain

-0.070

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.70

D;.;.;.

Eigen

Pathogenic

0.73

Eigen_PC

Pathogenic

0.71

FATHMM_MKL

Uncertain

0.81

LIST_S2

Benign

0.85

T;T;T;T

M_CAP

Benign

0.051

MetaRNN

Uncertain

0.69

D;D;D;D

MetaSVM

Pathogenic

0.86

MutationAssessor

Pathogenic

3.4

M;M;.;.

PrimateAI

Benign

0.42

PROVEAN

Uncertain

-3.0

D;D;D;D

REVEL

Pathogenic

0.65

Sift

Uncertain

0.0050

D;D;D;D

Sift4G

Uncertain

0.025

D;D;D;D

Polyphen

0.91

P;P;P;.

Vest4

0.59

MutPred

0.75

Gain of catalytic residue at L666 (P = 0.0576);Gain of catalytic residue at L666 (P = 0.0576);.;.;

MVP

0.93

MPC

0.29

ClinPred

0.78

GERP RS

5.8

Varity_R

0.53

gMVP

0.56

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