9-14737490-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001379081.2(FREM1):c.6446A>G(p.Lys2149Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000186 in 1,613,672 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

FREM1
NM_001379081.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.921

Variant links:

Genes affected

FREM1 (HGNC:23399): (FRAS1 related extracellular matrix 1) This gene encodes a basement membrane protein that may play a role in craniofacial and renal development. Mutations in this gene have been associated with bifid nose with or without anorectal and renal anomalies. Alternatively spliced transcript variants encoding different isoforms have been described. PubMed ID 19940113 describes one such variant that initiates transcription within a distinct, internal exon; the resulting shorter isoform (named Toll-like/interleukin-1 receptor regulator, TILRR) is suggested to be a co-receptor of the interleukin 1 receptor family and may regulate receptor function and Toll-like receptor/interleukin 1 receptor signal transduction, contributing to the control of inflammatory response activation. [provided by RefSeq, Apr 2011]

FREM1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0969958).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FREM1	NM_001379081.2 linkuse as main transcript	c.6446A>G	p.Lys2149Arg	missense_variant	37/37	ENST00000380880.4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FREM1	ENST00000380880.4 linkuse as main transcript	c.6446A>G	p.Lys2149Arg	missense_variant	37/37	5	NM_001379081.2	P1	Q5H8C1-1
FREM1	ENST00000380894.5 linkuse as main transcript	c.2054A>G	p.Lys685Arg	missense_variant	14/14	1			Q5H8C1-2
FREM1	ENST00000380875.7 linkuse as main transcript	c.*1012A>G		3_prime_UTR_variant, NMD_transcript_variant	31/31	1
FREM1	ENST00000427623.5 linkuse as main transcript	c.*627A>G		3_prime_UTR_variant, NMD_transcript_variant	11/11	5			Q5H8C1-4

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152156

Hom.:

Cov.:

show subpopulations

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

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461516

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727024

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152156

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74348

show subpopulations

Gnomad4 AFR

AF:

0.0000483

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:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 06, 2023

The c.6446A>G (p.K2149R) alteration is located in exon 38 (coding exon 36) of the FREM1 gene. This alteration results from a A to G substitution at nucleotide position 6446, causing the lysine (K) at amino acid position 2149 to be replaced by an arginine (R). 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

0.066

BayesDel_addAF

Benign

-0.34

BayesDel_noAF

Benign

-0.73

Cadd

Benign

8.0

Dann

Uncertain

0.98

DEOGEN2

Benign

0.049

T;.;T

Eigen

Benign

-0.51

Eigen_PC

Benign

-0.37

FATHMM_MKL

Uncertain

0.80

LIST_S2

Benign

0.60

T;T;.

M_CAP

Benign

0.0044

MetaRNN

Benign

0.097

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.3

L;.;L

MutationTaster

Benign

0.83

N;N;N;N

PrimateAI

Benign

0.28

PROVEAN

Benign

-0.89

N;N;N

REVEL

Benign

0.053

Sift

Benign

0.45

T;T;T

Sift4G

Benign

0.62

T;T;T

Polyphen

0.0050

B;.;B

Vest4

0.069

MutPred

0.53

Loss of methylation at K2149 (P = 0.0154);.;Loss of methylation at K2149 (P = 0.0154);

MVP

0.24

ClinPred

0.16

GERP RS

2.4

Varity_R

0.053

gMVP

0.53

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