16-4797972-C-T

Variant names:

• chr16-4797972-C-T
• rs757872277
• NM_024589.3:c.661G>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_024589.3(ROGDI):​c.661G>A​(p.Gly221Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,455,352 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 Uncertain significance (★). Another nucleotide change resulting in the same amino acid substitution has been previously reported as Uncertain significance in ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: ROGDI NM_024589.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.68
• Publications: 0 publications found

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 Gene-Disease associations (from GenCC):

• amelocerebrohypohidrotic syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, ClinGen, Labcorp Genetics (formerly Invitae)

ENSG00000285952 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.952

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ROGDI	NM_024589.3	c.661G>A	p.Gly221Arg	missense_variant	Exon 9 of 11	ENST00000322048.12	NP_078865.1
ROGDI	XM_006720947.5	c.661G>A	p.Gly221Arg	missense_variant	Exon 9 of 11		XP_006721010.1
ROGDI	XM_047434636.1	c.391G>A	p.Gly131Arg	missense_variant	Exon 7 of 9		XP_047290592.1
ROGDI	NR_046480.2	n.668G>A		non_coding_transcript_exon_variant	Exon 8 of 10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ROGDI	ENST00000322048.12	c.661G>A	p.Gly221Arg	missense_variant	Exon 9 of 11	1	NM_024589.3	ENSP00000322832.6

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1455352 Hom.: 0 Cov.: 36 AF XY: 0.00 AC XY: 0 AN XY: 722962

African (AFR) AF: 0.0000300 AC: 1 AN: 33376

American (AMR) AF: 0.00 AC: 0 AN: 44494

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25722

East Asian (EAS) AF: 0.00 AC: 0 AN: 39546

South Asian (SAS) AF: 0.00 AC: 0 AN: 85912

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52906

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5734

European-Non Finnish (NFE) AF: 9.03e-7 AC: 1 AN: 1107552

Other (OTH) AF: 0.00 AC: 0 AN: 60110

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Amelocerebrohypohidrotic syndrome Uncertain:1

Aug 16, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces glycine, which is neutral and non-polar, with arginine, which is basic and polar, at codon 221 of the ROGDI protein (p.Gly221Arg). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with ROGDI-related conditions. ClinVar contains an entry for this variant (Variation ID: 530794). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be disruptive. Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may disrupt the consensus splice site. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.74
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.010
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.040	T;T;T;T
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.79	T;T;T;T
M_CAP	Benign	0.034	D
MetaRNN	Pathogenic	0.95	D;D;D;D
MetaSVM	Benign	-0.98	T
MutationAssessor	Uncertain	2.1	M;.;.;.
PhyloP100		7.7
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-1.2	N;.;.;.
REVEL	Uncertain	0.42
Sift	Benign	0.073	T;.;.;.
Sift4G	Benign	0.067	T;.;.;D
Polyphen		1.0	D;.;.;.
Vest4		0.69
MutPred		0.85		Gain of solvent accessibility (P = 0.0128);.;.;.;
MVP		0.30
MPC		0.19
ClinPred		0.98	D
GERP RS		5.1
Varity_R		0.27
gMVP		0.77
Mutation Taster		=30/70	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs757872277; hg19: chr16-4847973;