NM_022449.4:c.277G>T

Variant names:

• chr2-237578036-C-A
• rs200859666
• NM_022449.4:c.277G>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_022449.4(RAB17):​c.277G>T​(p.Ala93Ser) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,459,658 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. A93T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: RAB17 NM_022449.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.80
• Publications: 0 publications found

Genes affected

RAB17 (HGNC:16523): (RAB17, member RAS oncogene family) The Rab subfamily of small GTPases plays an important role in the regulation of membrane trafficking. RAB17 is an epithelial cell-specific GTPase (Lutcke et al., 1993 [PubMed 8486736]).[supplied by OMIM, Oct 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.893

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_022449.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RAB17	NM_022449.4	MANE Select	c.277G>T	p.Ala93Ser	missense	Exon 3 of 6	NP_071894.1	Q9H0T7-1
	RAB17	NR_033308.2		n.429-654G>T		intron	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RAB17	ENST00000264601.8	TSL:1 MANE Select	c.277G>T	p.Ala93Ser	missense	Exon 3 of 6	ENSP00000264601.3	Q9H0T7-1
	RAB17	ENST00000477149.5	TSL:1	n.1535G>T		non_coding_transcript_exon	Exon 1 of 3
	RAB17	ENST00000392001.6	TSL:1	n.158-654G>T		intron	N/A	ENSP00000375858.2	F8WAG1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459658 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 725698

African (AFR) AF: 0.00 AC: 0 AN: 33452

American (AMR) AF: 0.00 AC: 0 AN: 44664

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26098

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39618

South Asian (SAS) AF: 0.00 AC: 0 AN: 86180

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53398

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1110214

Other (OTH) AF: 0.00 AC: 0 AN: 60272

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.34
BayesDel_addAF	Uncertain	0.082	D
BayesDel_noAF	Benign	-0.12
CADD	Benign	21
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
Eigen	Uncertain	0.35
Eigen_PC	Benign	0.21
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.96	D
M_CAP	Benign	0.037	D
MetaRNN	Pathogenic	0.89	D
MetaSVM	Uncertain	0.35	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		5.8
PrimateAI	Benign	0.45	T
PROVEAN	Uncertain	-2.8	D
REVEL	Uncertain	0.59
Sift	Uncertain	0.0070	D
Sift4G	Uncertain	0.012	D
Polyphen		0.96	D
Vest4		0.38
MutPred		0.74		Loss of methylation at R89 (P = 0.1205)
MVP		0.86
MPC		0.41
ClinPred		0.98	D
GERP RS		4.4
Varity_R		0.37
gMVP		0.59
Mutation Taster		=63/37	polymorphism

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

Other links and lift over

dbSNP: rs200859666; hg19: chr2-238486679;