chr9-122957204-C-T

Position:

• chr9-122957204-C-T

Variant summary

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

The NM_012197.4(RABGAP1):​c.145C>T​(p.Leu49Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RABGAP1 NM_012197.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.71

Genes affected

RABGAP1 (HGNC:17155): (RAB GTPase activating protein 1) Enables GTPase activator activity and small GTPase binding activity. Involved in regulation of GTPase activity. Located in cytosol. [provided by Alliance of Genome Resources, Apr 2022]

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/exons	MANE	UniProt
RABGAP1	NM_012197.4	c.145C>T	p.Leu49Phe	missense_variant	2/26	ENST00000373647.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RABGAP1	ENST00000373647.9	c.145C>T	p.Leu49Phe	missense_variant	2/26	1	NM_012197.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1374376 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 678352

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 08, 2023

The c.145C>T (p.L49F) alteration is located in exon 2 (coding exon 1) of the RABGAP1 gene. This alteration results from a C to T substitution at nucleotide position 145, causing the leucine (L) at amino acid position 49 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	Pathogenic	0.73
BayesDel_addAF	Uncertain	0.064	T
BayesDel_noAF	Benign	-0.15
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.12	T;.
Eigen	Pathogenic	0.75
Eigen_PC	Pathogenic	0.73
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.94	D;D
M_CAP	Benign	0.024	T
MetaRNN	Uncertain	0.43	T;T
MetaSVM	Uncertain	-0.16	T
MutationAssessor	Uncertain	2.2	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-1.5	N;D
REVEL	Benign	0.28
Sift	Pathogenic	0.0	D;D
Sift4G	Benign	0.074	T;D
Polyphen		0.99	D;.
Vest4		0.73
MutPred		0.43		Gain of methylation at K50 (P = 0.0379);Gain of methylation at K50 (P = 0.0379);
MVP		0.52
MPC		0.0074
ClinPred		0.92	D
GERP RS		4.9
Varity_R		0.30
gMVP		0.34

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-125719483;