NM_001134647.2:c.2189C>T

Variant names:

• chr4-7772884-G-A
• rs1365370863
• NM_001134647.2:c.2189C>T

Variant summary

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

The NM_001134647.2(AFAP1):​c.2189C>T​(p.Ala730Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,812 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: AFAP1 NM_001134647.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.26

Genes affected

AFAP1 (HGNC:24017): (actin filament associated protein 1) The protein encoded by this gene is a Src binding partner. It may represent a potential modulator of actin filament integrity in response to cellular signals, and may function as an adaptor protein by linking Src family members and/or other signaling proteins to actin filaments. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2008]

AFAP1-AS1 (HGNC:28141): (AFAP1 antisense RNA 1) This gene produces a long non-coding RNA that is overexpressed in tumor cells and may promote cancer cell metastasis. [provided by RefSeq, Dec 2017]

ACMG classification

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
AFAP1	NM_001134647.2	c.2189C>T	p.Ala730Val	missense_variant	Exon 16 of 18	ENST00000420658.6	NP_001128119.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AFAP1	ENST00000420658.6	c.2189C>T	p.Ala730Val	missense_variant	Exon 16 of 18	2	NM_001134647.2	ENSP00000410689.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD3 exomes AF: 0.00000401 AC: 1 AN: 249222 Hom.: 0 AF XY: 0.00000741 AC XY: 1 AN XY: 134918

Gnomad AFR exome AF: 0.00

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: 0.00000896

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461812 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727218

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000270

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Nov 23, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2189C>T (p.A730V) alteration is located in exon 16 (coding exon 15) of the AFAP1 gene. This alteration results from a C to T substitution at nucleotide position 2189, causing the alanine (A) at amino acid position 730 to be replaced by a valine (V). 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	0.23
BayesDel_addAF	Uncertain	0.062	T
BayesDel_noAF	Benign	-0.15
CADD	Uncertain	26
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.20	T;T;.;.
Eigen	Uncertain	0.58
Eigen_PC	Uncertain	0.59
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.92	.;D;D;.
M_CAP	Benign	0.031	D
MetaRNN	Uncertain	0.58	D;D;D;D
MetaSVM	Benign	-0.96	T
MutationAssessor	Uncertain	2.1	M;M;.;.
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-3.1	D;D;D;D
REVEL	Uncertain	0.30
Sift	Uncertain	0.0030	D;D;T;T
Sift4G	Uncertain	0.055	T;T;D;D
Polyphen		0.85	P;P;.;.
Vest4		0.74
MutPred		0.10		Gain of glycosylation at S642 (P = 0.029);Gain of glycosylation at S642 (P = 0.029);.;.;
MVP		0.38
MPC		0.48
ClinPred		0.95	D
GERP RS		4.9
Varity_R		0.51
gMVP		0.30

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

Other links and lift over

dbSNP: rs1365370863; hg19: chr4-7774611;