NM_173659.5:c.623T>A

Variant names:

• chr3-9840261-A-T
• rs2082083359
• NM_173659.5:c.623T>A

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_173659.5(RPUSD3):​c.623T>A​(p.Val208Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,614,008 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V208L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: RPUSD3 NM_173659.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.38
• Publications: 0 publications found

Genes affected

RPUSD3 (HGNC:28437): (RNA pseudouridine synthase D3) This gene encodes a protein that functions in the assembly of the mitochondrial ribosome by adding a pseudouridine group to 16S rRNA. Loss of this gene results in causes defects in mitochondrial protein production. Alternative splicing results in multiple transcript variants. [provided by RefSeq, May 2017]

TTLL3 (HGNC:24483): (tubulin tyrosine ligase like 3) Enables protein-glycine ligase activity. Predicted to be involved in axoneme assembly and flagellated sperm motility. Predicted to be located in axoneme; microtubule cytoskeleton; and sperm flagellum. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.41400325).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_173659.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RPUSD3	NM_173659.5	MANE Select	c.623T>A	p.Val208Asp	missense	Exon 7 of 9	NP_775930.3	Q6P087-5
	RPUSD3	NM_001351738.2		c.651T>A	p.Cys217*	stop_gained	Exon 7 of 9	NP_001338667.2
	RPUSD3	NM_001142547.3		c.578T>A	p.Val193Asp	missense	Exon 6 of 8	NP_001136019.2	Q6P087-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RPUSD3	ENST00000383820.10	TSL:1 MANE Select	c.623T>A	p.Val208Asp	missense	Exon 7 of 9	ENSP00000373331.6	Q6P087-5
	RPUSD3	ENST00000433535.7	TSL:1	c.578T>A	p.Val193Asp	missense	Exon 6 of 8	ENSP00000398921.3	Q6P087-6
	RPUSD3	ENST00000427174.5	TSL:5	c.645T>A	p.Cys215*	stop_gained	Exon 7 of 9	ENSP00000400397.1	H7C1H7

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152120 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000241

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461888 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 727246

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.0000299 AC: 1 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112010

Other (OTH) AF: 0.00 AC: 0 AN: 60396

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152120 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74302

African (AFR) AF: 0.0000241 AC: 1 AN: 41420

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5188

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10598

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 314

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68012

Other (OTH) AF: 0.00 AC: 0 AN: 2090

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.81
BayesDel_addAF	Uncertain	0.048	T
BayesDel_noAF	Benign	-0.17
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0096	T
Eigen	Uncertain	0.47
Eigen_PC	Uncertain	0.44
FATHMM_MKL	Uncertain	0.89	D
LIST_S2	Uncertain	0.88	D
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.41	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.3	L
PhyloP100		3.4
PrimateAI	Uncertain	0.52	T
PROVEAN	Benign	-2.1	N
REVEL	Benign	0.24
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0040	D
Polyphen		0.99	D
Vest4		0.74
MVP		0.38
MPC		0.68
ClinPred		0.88	D
GERP RS		4.3
PromoterAI		0.012	Neutral
Varity_R		0.78
gMVP		0.90
Mutation Taster		=67/33	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs2082083359; hg19: chr3-9881945;