19-900858-C-G

Position:

• chr19-900858-C-G

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_138774.4(R3HDM4):​c.446G>C​(p.Gly149Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000428 in 1,400,796 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 28)
  • Exomes 𝑓: 0.0000043 (0 hom.)
• Consequence: R3HDM4 NM_138774.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.40

Genes affected

R3HDM4 (HGNC:28270): (R3H domain containing 4) Predicted to enable nucleic acid binding activity. Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

R3HDM4 (HGNC:):

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.05580753).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
R3HDM4	NM_138774.4	c.446G>C	p.Gly149Ala	missense_variant	4/8	ENST00000361574.10	NP_620129.2
R3HDM4	XM_011528416.3	c.446G>C	p.Gly149Ala	missense_variant	4/8		XP_011526718.1
R3HDM4	XM_024451771.2	c.80G>C	p.Gly27Ala	missense_variant	4/8		XP_024307539.1
R3HDM4	XM_047439659.1	c.80G>C	p.Gly27Ala	missense_variant	3/7		XP_047295615.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
R3HDM4	ENST00000361574.10	c.446G>C	p.Gly149Ala	missense_variant	4/8	1	NM_138774.4	ENSP00000355385.4

Frequencies

GnomAD3 genomes Cov.: 28

GnomAD4 exome AF: 0.00000428 AC: 6 AN: 1400796 Hom.: 0 Cov.: 35 AF XY: 0.00000434 AC XY: 3 AN XY: 691520

Gnomad4 AFR exome AF: 0.0000935

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: 0.00000185

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 28

Asia WGS AF: 0.000289 AC: 1 AN: 3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 04, 2024

The c.446G>C (p.G149A) alteration is located in exon 4 (coding exon 4) of the R3HDM4 gene. This alteration results from a G to C substitution at nucleotide position 446, causing the glycine (G) at amino acid position 149 to be replaced by an alanine (A). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.49
CADD	Benign	10
DANN	Benign	0.57
DEOGEN2	Benign	0.0030	T;T
Eigen	Benign	-0.94
Eigen_PC	Benign	-0.93
FATHMM_MKL	Benign	0.52	D
LIST_S2	Benign	0.78	T;T
M_CAP	Benign	0.0029	T
MetaRNN	Benign	0.056	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L;.
PrimateAI	Uncertain	0.57	T
PROVEAN	Benign	-0.51	N;.
REVEL	Benign	0.064
Sift	Benign	1.0	T;.
Sift4G	Benign	0.94	T;T
Polyphen		0.011	B;.
Vest4		0.28
MutPred		0.24		Loss of methylation at R148 (P = 0.064);.;
MVP		0.12
MPC		0.15
ClinPred		0.031	T
GERP RS		0.62
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.083
gMVP		0.28

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

Other links and lift over

dbSNP: rs1198251255; hg19: chr19-900858;