20-19886612-CTTTTTTTTTTT-CTTTT

Variant names:

• chr20-19886612-CTTTTTTT-C
• NM_018993.4:c.-36-2941_-36-2935delTTTTTTT

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BS1

The NM_018993.4(RIN2):​c.-36-2941_-36-2935delTTTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000257 in 405,388 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 0)
  • Exomes 𝑓: 0.00026 (0 hom.)
• Consequence: RIN2 NM_018993.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.204

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]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BS1: Variant frequency is greater than expected in population afr. gnomad4_exome allele frequency = 0.000257 (104/405388) while in subpopulation AFR AF= 0.000585 (5/8540). AF 95% confidence interval is 0.00023. There are 0 homozygotes in gnomad4_exome. There are 53 alleles in male gnomad4_exome subpopulation. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RIN2	NM_018993.4	c.-36-2941_-36-2935delTTTTTTT		intron_variant	Intron 2 of 12	ENST00000255006.12	NP_061866.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RIN2	ENST00000255006.12	c.-36-2941_-36-2935delTTTTTTT		intron_variant	Intron 2 of 12	2	NM_018993.4	ENSP00000255006.7
RIN2	ENST00000648440	c.-192_-186delTTTTTTT		5_prime_UTR_variant	Exon 1 of 12			ENSP00000498085.1
RIN2	ENST00000432334.2	n.537-2941_537-2935delTTTTTTT		intron_variant	Intron 3 of 3	4
RIN2	ENST00000648165.1	n.618-2941_618-2935delTTTTTTT		intron_variant	Intron 3 of 3

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome AF: 0.000257 AC: 104 AN: 405388 Hom.: 0 AF XY: 0.000242 AC XY: 53 AN XY: 219014

Gnomad4 AFR exome AF: 0.000585

Gnomad4 AMR exome AF: 0.000184

Gnomad4 ASJ exome AF: 0.000155

Gnomad4 EAS exome AF: 0.000287

Gnomad4 SAS exome AF: 0.000223

Gnomad4 FIN exome AF: 0.0000914

Gnomad4 NFE exome AF: 0.000276

Gnomad4 OTH exome AF: 0.000326

GnomAD4 genome Cov.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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: chr20-19867256;