Genetic Variant RAP1A:c.127-10delG (chr1-111697430-TG-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP6_Moderate

The NM_002884.4(RAP1A):c.127-10delG variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: not found (cov: 30)

Exomes 𝑓: 0.000021 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

RAP1A
NM_002884.4 intron

Scores

Not classified

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.988

Publications

0 publications found

Variant links:

Genes affected

RAP1A (HGNC:9855): (RAP1A, member of RAS oncogene family) This gene encodes a member of the Ras family of small GTPases. The encoded protein undergoes a change in conformational state and activity, depending on whether it is bound to GTP or GDP. This protein is activated by several types of guanine nucleotide exchange factors (GEFs), and inactivated by two groups of GTPase-activating proteins (GAPs). The activation status of the encoded protein is therefore affected by the balance of intracellular levels of GEFs and GAPs. The encoded protein regulates signaling pathways that affect cell proliferation and adhesion, and may play a role in tumor malignancy. Pseudogenes of this gene have been defined on chromosomes 14 and 17. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2014]

RAP1A links:

INKA2 (HGNC:28045): (inka box actin regulator 2) Enables protein kinase binding activity. Predicted to be involved in negative regulation of catalytic activity. Located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

INKA2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP6

Variant 1-111697430-TG-T is Benign according to our data. Variant chr1-111697430-TG-T is described in ClinVar as Likely_benign. ClinVar VariationId is 723561.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002884.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
RAP1A	NM_002884.4	MANE Select	c.127-10delG	intron	N/A	NP_002875.1	P62834
RAP1A	NM_001010935.3		c.127-10delG	intron	N/A	NP_001010935.1	P62834
RAP1A	NM_001291896.3		c.127-10delG	intron	N/A	NP_001278825.1	P62834

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
RAP1A	ENST00000369709.4	TSL:1 MANE Select	c.127-10delG	intron	N/A	ENSP00000358723.3	P62834
RAP1A	ENST00000356415.5	TSL:1	c.127-10delG	intron	N/A	ENSP00000348786.1	P62834
RAP1A	ENST00000687939.1		c.127-10delG	intron	N/A	ENSP00000509234.1	P62834

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000446

AC:

AN:

246520

AF XY:

0.0000449

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000596

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000111

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000357

Gnomad OTH exome

AF:

0.000333

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000206

AC:

AN:

1458476

Hom.:

Cov.:

AF XY:

0.0000165

AC XY:

AN XY:

725614

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.0000300

AC:

AN:

33292

American (AMR)

AF:

0.000226

AC:

AN:

44232

Ashkenazi Jewish (ASJ)

AF:

0.0000769

AC:

AN:

26018

East Asian (EAS)

AF:

0.00

AC:

AN:

39656

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86024

European-Finnish (FIN)

AF:

0.000114

AC:

AN:

52418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5748

European-Non Finnish (NFE)

AF:

0.00000900

AC:

AN:

1110848

Other (OTH)

AF:

0.00

AC:

AN:

60240

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.232

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.000359

Hom.:

ClinVar

ClinVar submissions

Significance:Likely benign

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.99

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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over