3-9371409-T-C

Variant names:

• chr3-9371409-T-C
• rs374411226
• NM_001114092.2:c.680T>C

Variant summary

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

The NM_001114092.2(THUMPD3):​c.680T>C​(p.Phe227Ser) variant causes a missense 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. F227C) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: THUMPD3 NM_001114092.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.94
• Publications: 0 publications found

Genes affected

THUMPD3 (HGNC:24493): (THUMP domain containing 3) Predicted to enable tRNA (guanine) methyltransferase activity. Predicted to be involved in tRNA methylation. Located in cytosol and nucleolus. [provided by Alliance of Genome Resources, Apr 2022]

THUMPD3-AS1 (HGNC:44478): (THUMPD3 antisense RNA 1)

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001114092.2. 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
	THUMPD3	NM_001114092.2	MANE Select	c.680T>C	p.Phe227Ser	missense	Exon 4 of 10	NP_001107564.1	Q9BV44
	THUMPD3	NM_015453.3		c.680T>C	p.Phe227Ser	missense	Exon 4 of 10	NP_056268.2	Q9BV44

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	THUMPD3	ENST00000452837.7	TSL:1 MANE Select	c.680T>C	p.Phe227Ser	missense	Exon 4 of 10	ENSP00000395893.2	Q9BV44
	THUMPD3	ENST00000515662.6	TSL:1	c.680T>C	p.Phe227Ser	missense	Exon 4 of 10	ENSP00000424064.1	Q9BV44
	THUMPD3-AS1	ENST00000468186.5	TSL:1	n.2875+18881A>G		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251300 AF XY: 0.00000736

Gnomad AFR exome AF: 0.0000616

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.34
CADD	Pathogenic	30
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.44	T
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.91	D
M_CAP	Uncertain	0.089	D
MetaRNN	Pathogenic	0.95	D
MetaSVM	Uncertain	0.66	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		7.9
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-6.9	D
REVEL	Pathogenic	0.90
Sift	Uncertain	0.0010	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.92
MVP		0.96
MPC		0.43
ClinPred		1.0	D
GERP RS		5.9
PromoterAI		0.0017	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.90
gMVP		0.90
Mutation Taster		=15/85	disease causing

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

Other links and lift over

dbSNP: rs374411226; hg19: chr3-9413093;