Genetic Variant NM_018993.4:c.-37+21797C>T (chr20-19821544-C-T) – ACMG Classification: Benign (-12 pts)

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBA1

The NM_018993.4(RIN2):c.-37+21797C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0253 in 152,222 control chromosomes in the GnomAD database, including 172 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.025 ( 172 hom., cov: 32)

Consequence

RIN2
NM_018993.4 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.222

Publications

5 publications found

Variant links:

Genes affected

RIN2 (HGNC:18750): (Ras and Rab interactor 2) The RAB5 protein is a small GTPase involved in membrane trafficking in the early endocytic pathway. The protein encoded by this gene binds the GTP-bound form of the RAB5 protein preferentially over the GDP-bound form, and functions as a guanine nucleotide exchange factor for RAB5. The encoded protein is found primarily as a tetramer in the cytoplasm and does not bind other members of the RAB family. Mutations in this gene cause macrocephaly alopecia cutis laxa and scoliosis (MACS) syndrome, an elastic tissue disorder, as well as the related connective tissue disorder, RIN2 syndrome. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2011]

RIN2 Gene-Disease associations (from GenCC):

RIN2 syndrome
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Genomics England PanelApp, Orphanet, G2P, PanelApp Australia, Labcorp Genetics (formerly Invitae)

RIN2 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.88).

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0861 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RIN2	NM_018993.4 link	c.-37+21797C>T		intron_variant	Intron 2 of 12	ENST00000255006.12	NP_061866.1	Q8WYP3-1A1A4T0

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein	UniProt
RIN2	ENST00000255006.12 link	c.-37+21797C>T	intron_variant	Intron 2 of 12	2	NM_018993.4	ENSP00000255006.7	Q8WYP3-1
RIN2	ENST00000432334.2 link	n.536+6246C>T	intron_variant	Intron 3 of 3	4
RIN2	ENST00000616029.2 link	n.358+21797C>T	intron_variant	Intron 2 of 3	6
RIN2	ENST00000648165.1 link	n.403+21797C>T	intron_variant	Intron 2 of 3

Frequencies

GnomAD3 genomes

AF:

0.0251

AC:

3821

AN:

152104

Hom.:

168

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0881

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00825

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000387

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000132

Gnomad OTH

AF:

0.0158

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.0253

AC:

3848

AN:

152222

Hom.:

172

Cov.:

AF XY:

0.0253

AC XY:

1882

AN XY:

74438

show subpopulations

African (AFR)

AF:

0.0885

AC:

3676

AN:

41530

American (AMR)

AF:

0.00824

AC:

126

AN:

15300

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000388

AC:

AN:

5154

South Asian (SAS)

AF:

0.000208

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000132

AC:

AN:

68014

Other (OTH)

AF:

0.0156

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

163

325

488

650

813

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

120

160

200

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00828

Hom.:

Bravo

AF:

0.0283

Asia WGS

AF:

0.00982

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.88

CADD

Benign

1.5

(source)

DANN

Benign

0.67

PhyloP100

-0.22

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over