9-14846038-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001379081.2(FREM1):c.1315G>A(p.Val439Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000187 in 1,606,572 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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. V439L) has been classified as Benign.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

FREM1
NM_001379081.2 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 1.30

Publications

34 publications found

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 Gene-Disease associations (from GenCC):

oculotrichoanal syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
BNAR syndrome
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet
isolated trigonocephaly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
renal agenesis, unilateral
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
trigonocephaly 2
Inheritance: AD Classification: LIMITED, NO_KNOWN Submitted by: Ambry Genetics, PanelApp Australia, Labcorp Genetics (formerly Invitae)

FREM1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.049314886).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
FREM1	NM_001379081.2 link	c.1315G>A	p.Val439Ile	missense_variant	Exon 8 of 37	ENST00000380880.4	NP_001366010.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
FREM1	ENST00000380880.4 link	c.1315G>A	p.Val439Ile	missense_variant	Exon 8 of 37	5	NM_001379081.2	ENSP00000370262.3
FREM1	ENST00000380875.7 link	n.1315G>A		non_coding_transcript_exon_variant	Exon 9 of 31	1		ENSP00000370257.3

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

152032

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00000421

AC:

AN:

237640

AF XY:

0.00000778

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000302

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

0.00000138

AC:

AN:

1454540

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

722856

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

33390

American (AMR)

AF:

0.0000457

AC:

AN:

43724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25974

East Asian (EAS)

AF:

0.00

AC:

AN:

39434

South Asian (SAS)

AF:

0.00

AC:

AN:

84978

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53024

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1108124

Other (OTH)

AF:

0.00

AC:

AN:

60132

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.00000000770867), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.400

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000658

AC:

AN:

152032

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74250

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41388

American (AMR)

AF:

0.0000655

AC:

AN:

15278

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5184

South Asian (SAS)

AF:

0.00

AC:

AN:

4824

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10566

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68000

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

7018

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.068

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.65

CADD

Benign

0.28

(source)

DANN

Benign

0.75

DEOGEN2

Benign

0.066

T;T

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.1

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.72

T;.

M_CAP

Benign

0.0091

MetaRNN

Benign

0.049

T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

-1.4

N;N

PhyloP100

1.3

PrimateAI

Benign

0.24

PROVEAN

Benign

0.63

N;N

REVEL

Benign

0.037

Sift

Benign

1.0

T;T

Sift4G

Benign

1.0

T;T

Polyphen

0.0

B;B

Vest4

0.10

MutPred

0.34

Loss of catalytic residue at V439 (P = 0.086);Loss of catalytic residue at V439 (P = 0.086);

MVP

0.072

ClinPred

0.018

GERP RS

0.99

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.026

gMVP

0.12

Mutation Taster

=98/2

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over