Genetic Variant RASA2:p.Ala8_Ala9insAlaAlaAlaAlaProAlaAla (chr3-141487085-T-TGGCGGCGGCGGCGCCTGCTGC) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PM4

The NM_006506.5(RASA2):c.3_23dupGGCGGCGGCGGCGCCTGCTGC(p.Ala8_Ala9insAlaAlaAlaAlaProAlaAla) variant causes a disruptive inframe insertion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000017 in 1,356,370 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000067 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

RASA2
NM_006506.5 disruptive_inframe_insertion

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.08

Variant links:

Genes affected

RASA2 (HGNC:9872): (RAS p21 protein activator 2) The protein encoded by this gene is member of the GAP1 family of GTPase-activating proteins. The gene product stimulates the GTPase activity of normal RAS p21 but not its oncogenic counterpart. Acting as a suppressor of RAS function, the protein enhances the weak intrinsic GTPase activity of RAS proteins resulting in the inactive GDP-bound form of RAS, thereby allowing control of cellular proliferation and differentiation. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2014]

RASA2 links:

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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;

PM4

Nonframeshift variant in NON repetitive region in NM_006506.5.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RASA2	NM_006506.5 link	c.3_23dupGGCGGCGGCGGCGCCTGCTGC	p.Ala8_Ala9insAlaAlaAlaAlaProAlaAla	disruptive_inframe_insertion	Exon 1 of 24	ENST00000286364.9	NP_006497.2	Q15283-2
RASA2	NM_001303246.3 link	c.3_23dupGGCGGCGGCGGCGCCTGCTGC	p.Ala8_Ala9insAlaAlaAlaAlaProAlaAla	disruptive_inframe_insertion	Exon 1 of 25		NP_001290175.1	Q15283
RASA2	NM_001303245.3 link	c.3_23dupGGCGGCGGCGGCGCCTGCTGC	p.Ala8_Ala9insAlaAlaAlaAlaProAlaAla	disruptive_inframe_insertion	Exon 1 of 24		NP_001290174.1	Q15283-1
RASA2	XM_047448652.1 link	c.3_23dupGGCGGCGGCGGCGCCTGCTGC	p.Ala8_Ala9insAlaAlaAlaAlaProAlaAla	disruptive_inframe_insertion	Exon 1 of 17		XP_047304608.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RASA2	ENST00000286364.9 link	c.3_23dupGGCGGCGGCGGCGCCTGCTGC	p.Ala8_Ala9insAlaAlaAlaAlaProAlaAla	disruptive_inframe_insertion	Exon 1 of 24	1	NM_006506.5	ENSP00000286364.3		Q15283-2
RASA2	ENST00000515549.1 link	n.3_23dupGGCGGCGGCGGCGCCTGCTGC		non_coding_transcript_exon_variant	Exon 1 of 5	4		ENSP00000424293.1		D6RBA9

Frequencies

GnomAD3 genomes

AF:

0.00000668

AC:

AN:

149682

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000245

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.0000182

AC:

AN:

1206688

Hom.:

Cov.:

AF XY:

0.0000186

AC XY:

AN XY:

591886

show subpopulations

Gnomad4 AFR exome

AF:

0.0000423

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000172

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000205

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000668

AC:

AN:

149682

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

73044

show subpopulations

Gnomad4 AFR

AF:

0.0000245

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:

0.00

Gnomad4 OTH

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

May 08, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant, c.3_23dup, results in the insertion of 7 amino acid(s) of the RASA2 protein (p.Ala5_Ala11dup), but otherwise preserves the integrity of the reading frame. This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with RASA2-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

Splicing

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