chr15-40737134-A-C

Position:

• chr15-40737134-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_018145.3(RMDN3):​c.1349T>G​(p.Val450Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,804 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RMDN3 NM_018145.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.46

Genes affected

RMDN3 (HGNC:25550): (regulator of microtubule dynamics 3) Enables microtubule binding activity. Involved in cellular calcium ion homeostasis. Located in several cellular components, including intercellular bridge; mitochondrial outer membrane; and spindle. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.15003878).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RMDN3	NM_018145.3	c.1349T>G	p.Val450Gly	missense_variant	12/13	ENST00000338376.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RMDN3	ENST00000338376.8	c.1349T>G	p.Val450Gly	missense_variant	12/13	1	NM_018145.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461804 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727192

Gnomad4 AFR exome AF: 0.0000299

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.: 32

Bravo AF: 0.00000378

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

Jan 08, 2024

The c.1349T>G (p.V450G) alteration is located in exon 12 (coding exon 11) of the RMDN3 gene. This alteration results from a T to G substitution at nucleotide position 1349, causing the valine (V) at amino acid position 450 to be replaced by a glycine (G). 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	0.13
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	19
DANN	Benign	0.96
DEOGEN2	Benign	0.070	T;T
Eigen	Benign	-0.26
Eigen_PC	Benign	-0.022
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Benign	0.55	.;T
M_CAP	Benign	0.0062	T
MetaRNN	Benign	0.15	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.0	M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Benign	0.30	T
PROVEAN	Uncertain	-2.8	D;D
REVEL	Benign	0.10
Sift	Benign	0.11	T;T
Sift4G	Benign	0.30	T;T
Polyphen		0.0040	B;B
Vest4		0.24
MutPred		0.51		Loss of stability (P = 0.0012);Loss of stability (P = 0.0012);
MVP		0.32
MPC		0.21
ClinPred		0.27	T
GERP RS		5.8
Varity_R		0.33
gMVP		0.39

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: rs1897084771; hg19: chr15-41029332;