chr16-4802381-C-A

Position:

• chr16-4802381-C-A

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PVS1_Moderate PM2 PP5_Moderate

The NM_024589.3(ROGDI):​c.117+1G>T variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ROGDI NM_024589.3 splice_donor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 7.38

Genes affected

ROGDI (HGNC:29478): (rogdi atypical leucine zipper) Involved in brain development; neurogenesis; and odontogenesis of dentin-containing tooth. Located in nuclear envelope. Implicated in Kohlschutter-Tonz syndrome. [provided by Alliance of Genome Resources, Apr 2022]

ROGDI (HGNC:):

ACMG classification

Verdict is Likely_pathogenic. Variant got 6 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, product NOT destroyed by NMD, known LOF gene, truncates exone, which is 0.082175925 fraction of the gene. No cryptic splice site detected. Exon removal is inframe change.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 16-4802381-C-A is Pathogenic according to our data. Variant chr16-4802381-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 947711.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ROGDI	NM_024589.3	c.117+1G>T		splice_donor_variant, intron_variant		ENST00000322048.12	NP_078865.1
ROGDI	XM_006720947.5	c.117+1G>T		splice_donor_variant, intron_variant			XP_006721010.1
ROGDI	XM_047434636.1	c.-99+1G>T		splice_donor_variant, intron_variant			XP_047290592.1
ROGDI	NR_046480.2	n.179+1G>T		splice_donor_variant, intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ROGDI	ENST00000322048.12	c.117+1G>T		splice_donor_variant, intron_variant		1	NM_024589.3	ENSP00000322832.6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1418102 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 703586

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Amelocerebrohypohidrotic syndrome Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 28, 2022

For these reasons, this variant has been classified as Pathogenic. Studies have shown that disruption of this splice site results in skipping of exon 2, but is expected to preserve the integrity of the reading-frame (PMID: 25565929). ClinVar contains an entry for this variant (Variation ID: 947711). Disruption of this splice site has been observed in individual(s) with Kohlschutter-Tonz syndrome (PMID: 25565929). This variant is not present in population databases (gnomAD no frequency). This sequence change affects a donor splice site in intron 2 of the ROGDI gene. RNA analysis indicates that disruption of this splice site induces altered splicing and likely results in a shortened protein product. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	35
DANN	Uncertain	0.99
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.87
FATHMM_MKL	Pathogenic	0.99	D
GERP RS		4.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.93
SpliceAI score (max)		0.99		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.31		Position offset: 2
DS_DL_spliceai		0.99		Position offset: 1

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

Publications

LitVar

Other links and lift over

dbSNP: rs570952151; hg19: chr16-4852382;