rs121918203

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_015272.5(RPGRIP1L):c.2614C>T(p.Gln872Ter) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000328 in 1,613,750 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000031 ( 0 hom. )

Consequence

RPGRIP1L
NM_015272.5 stop_gained

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:7U:1

Conservation

PhyloP100: 3.50

Variant links:

Genes affected

RPGRIP1L (HGNC:29168): (RPGRIP1 like) The protein encoded by this gene can localize to the basal body-centrosome complex or to primary cilia and centrosomes in ciliated cells. The encoded protein has been found to interact with nephrocystin-4. Defects in this gene are a cause of Joubert syndrome type 7 (JBTS7) and Meckel syndrome type 5 (MKS5). [provided by RefSeq, Jun 2016]

RPGRIP1L links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PM2

Very rare variant in population databases, with high coverage;

PP5

Variant 16-53645694-G-A is Pathogenic according to our data. Variant chr16-53645694-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1074.We mark this variant Likely_pathogenic, oryginal submissions are: {Pathogenic=3, Likely_pathogenic=2, Uncertain_significance=1}. Variant chr16-53645694-G-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RPGRIP1L	NM_015272.5 linkuse as main transcript	c.2614C>T	p.Gln872Ter	stop_gained	17/27	ENST00000647211.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RPGRIP1L	ENST00000647211.2 linkuse as main transcript	c.2614C>T	p.Gln872Ter	stop_gained	17/27		NM_015272.5		Q68CZ1-1

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152066

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

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:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251096

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135708

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000441

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000315

AC:

AN:

1461684

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

727152

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000387

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152066

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74268

show subpopulations

Gnomad4 AFR

AF:

0.0000483

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:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000847

Hom.:

Bravo

AF:

0.0000567

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Pathogenic:7Uncertain:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Meckel-Gruber syndrome;C0431399:Familial aplasia of the vermis

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Invitae

Dec 21, 2023

This sequence change creates a premature translational stop signal (p.Gln872*) in the RPGRIP1L gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in RPGRIP1L are known to be pathogenic (PMID: 17558409). This variant is present in population databases (rs121918203, gnomAD 0.007%). This premature translational stop signal has been observed in individual(s) with Meckel syndrome (PMID: 17558409). ClinVar contains an entry for this variant (Variation ID: 1074). For these reasons, this variant has been classified as Pathogenic. -

RPGRIP1L-related condition

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jan 30, 2024

The RPGRIP1L c.2614C>T variant is predicted to result in premature protein termination (p.Gln872*). This variant has been reported together with another truncating variant in a fetus with phenotypic features consistent with Meckel-Gruber syndrome (Delous et al. 2007. PubMed ID: 17558409). This variant is reported in 0.0044% of alleles in individuals of European (Non-Finnish) descent in gnomAD. Nonsense variants in RPGRIP1L are expected to be pathogenic. This variant is interpreted as pathogenic. -

Meckel syndrome, type 5

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jul 01, 2007

- -

Meckel syndrome, type 5;C1969053:Joubert syndrome 7;C5435651:COACH syndrome 1

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Fulgent Genetics, Fulgent Genetics

Oct 31, 2018

- -

not provided

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Eurofins Ntd Llc (ga)

Sep 20, 2013

- -

Meckel-Gruber syndrome

Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Aug 11, 2020

The p.Gln872X variant in RPGRIP1L has been reported in one French individual with Meckel Syndrome, who also carried a second variant (p.Q345X) in the same gene (Delous 2007 PMID: 17558509). This variant has also been reported in ClinVar (Variation ID 1074) and identified in 0.00004% (5/113470) of European chromosomes by gnomAD (http://gnomad.broadinstitute.org). This nonsense variant leads to a premature termination codon at position 872, which is predicted to lead to a truncated or absent protein. Please note, the exon it resides in (exon 17) is alternatively spliced out of two of seven ubiquitously expressed transcripts. Complete loss of RPGRIP1L function is an established disease mechanism in RPGRIP1L-related disorders such as Joubert syndrome and Meckel syndrome (Delous 2007). Moreover, Rpgrip1l -/- mice show a similar phenotype to individuals affected with these disorders including polydactyly, craniofacial malformations, and left-right symmetry defects (Vierkotten 2007). In summary, although additional studies are required to fully establish its clinical significance, this variant meets criteria to be classified as likely pathogenic for autosomal recessive RPGRIP1L-related disorders. ACMG/AMP criteria applied: PVS1_Strong, PM2, PM3. -

Familial aplasia of the vermis

Pathogenic:1

Pathogenic, no assertion criteria provided

clinical testing

Natera, Inc.

Aug 03, 2021

- -

RPGRIP1L-Related Disorders

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Apr 08, 2019

The RPGRIP1L c.2614C>T (p.Gln872Ter) variant is a stop-gained variant predicted to result in premature termination of the protein. The p.Gln872Ter variant has been reported in one study in which it was found in a compound heterozygous state with a second stop-gained variant in a fetus diagnosed with Meckel syndrome (Delous et al. 2007). Control data are unavailable for this variant, which is reported at a frequency of 0.00005 in the European (non-Finnish) population of the Exome Aggregation Consortium. Based on the limited evidence and the potential impact of stop-gained variants, the p.Gln872Ter variant is classified as a variant of unknown significance but suspicious for pathogenicity for RPGRIP1L -related disorders. This variant was observed by ICSL as part of a predisposition screen in an ostensibly healthy population. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.50

BayesDel_noAF

Pathogenic

0.54

Cadd

Pathogenic

Dann

Uncertain

1.0

Eigen

Pathogenic

0.97

Eigen_PC

Pathogenic

0.80

FATHMM_MKL

Uncertain

0.88

MutationTaster

Benign

1.0

A;A;A;A

Vest4

0.82

GERP RS

5.4

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

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