Genetic Variant AFAP1L1:p.Arg229Trp (chr5-149307551-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_152406.4(AFAP1L1):c.685C>T(p.Arg229Trp) variant causes a missense change. The variant allele was found at a frequency of 0.0000105 in 1,613,794 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

AFAP1L1
NM_152406.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.74

Variant links:

Genes affected

AFAP1L1 (HGNC:26714): (actin filament associated protein 1 like 1) Predicted to enable SH3 domain binding activity. Predicted to be located in cell junction; cell projection; and podosome. Predicted to be active in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

AFAP1L1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.894

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AFAP1L1	NM_152406.4 link	c.685C>T	p.Arg229Trp	missense_variant	Exon 7 of 19	ENST00000296721.9	NP_689619.1	Q8TED9-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
AFAP1L1	ENST00000296721.9 link	c.685C>T	p.Arg229Trp	missense_variant	Exon 7 of 19	1	NM_152406.4	ENSP00000296721.4	Q8TED9-1
AFAP1L1	ENST00000515000.1 link	c.685C>T	p.Arg229Trp	missense_variant	Exon 7 of 18	1		ENSP00000424427.1	Q8TED9-2
AFAP1L1	ENST00000455574.6 link	n.783C>T		non_coding_transcript_exon_variant	Exon 7 of 9	1
AFAP1L1	ENST00000522492.1 link	n.809C>T		non_coding_transcript_exon_variant	Exon 8 of 8	3

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152088

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000119

AC:

AN:

251432

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135910

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

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:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461588

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727086

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000108

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74398

show subpopulations

Gnomad4 AFR

AF:

0.0000482

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:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000282

Hom.:

Bravo

AF:

0.0000227

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Neuromuscular disease

Uncertain:1

Nov 22, 2024

Broad Center for Mendelian Genomics, Broad Institute of MIT and Harvard

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: curation

The heterozygous p.Arg229Trp variant in AFAP1L1 was identified by our study, in the compound heterozygous state with another variant of uncertain significance, in 1 individual with neuromuscular disease. While this gene is still lacking sufficient evidence to establish a gene-disease relationship, we believe this is a possible novel gene candidate for neuromuscular disease. Given the limited information about this gene-disease relationship, the significance of the AFAP1L1 variant is uncertain. If you have any additional information about functional evidence or other individuals with this phenotype that also have variants in AFAP1L1 we encourage you to reach out to us. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.74

BayesDel_addAF

Uncertain

0.054

BayesDel_noAF

Uncertain

0.080

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Pathogenic

0.81

D;.

Eigen

Pathogenic

0.81

Eigen_PC

Pathogenic

0.75

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Pathogenic

1.0

D;D

M_CAP

Benign

0.056

MetaRNN

Pathogenic

0.89

D;D

MetaSVM

Benign

-0.88

MutationAssessor

Uncertain

2.7

M;M

PrimateAI

Pathogenic

0.89

PROVEAN

Pathogenic

-7.2

D;D

REVEL

Uncertain

0.47

Sift

Pathogenic

0.0

D;D

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.90

MutPred

0.80

Gain of catalytic residue at L227 (P = 0.0037);Gain of catalytic residue at L227 (P = 0.0037);

MVP

0.52

MPC

0.50

ClinPred

1.0

GERP RS

4.9

Varity_R

0.87

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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