6-88941078-C-A

Position:

• chr6-88941078-C-A

Variant summary

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

The NM_003800.5(RNGTT):​c.167G>T​(p.Ser56Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RNGTT NM_003800.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.34

Genes affected

RNGTT (HGNC:10073): (RNA guanylyltransferase and 5'-phosphatase) Enables mRNA guanylyltransferase activity and triphosphatase activity. Involved in 7-methylguanosine mRNA capping. Predicted to be located in nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RNGTT	NM_003800.5	c.167G>T	p.Ser56Ile	missense_variant	2/16	ENST00000369485.9	NP_003791.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RNGTT	ENST00000369485.9	c.167G>T	p.Ser56Ile	missense_variant	2/16	1	NM_003800.5	ENSP00000358497	P1
RNGTT	ENST00000369475.7	c.167G>T	p.Ser56Ile	missense_variant	2/15	1		ENSP00000358487
RNGTT	ENST00000538899.2	c.167G>T	p.Ser56Ile	missense_variant	2/12	1		ENSP00000442609
RNGTT	ENST00000627296.1	n.319G>T		non_coding_transcript_exon_variant	2/14	2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 32

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

Oct 12, 2021

The c.167G>T (p.S56I) alteration is located in exon 2 (coding exon 2) of the RNGTT gene. This alteration results from a G to T substitution at nucleotide position 167, causing the serine (S) at amino acid position 56 to be replaced by an isoleucine (I). 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	Pathogenic	0.88
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.44	T;.;.
Eigen	Uncertain	0.66
Eigen_PC	Uncertain	0.61
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.92	D;D;D
M_CAP	Benign	0.054	D
MetaRNN	Uncertain	0.57	D;D;D
MetaSVM	Benign	-0.91	T
MutationAssessor	Uncertain	2.3	M;M;M
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.84	D
PROVEAN	Uncertain	-3.6	D;D;.
REVEL	Benign	0.25
Sift	Uncertain	0.013	D;D;.
Sift4G	Uncertain	0.036	D;D;T
Polyphen		0.98	D;D;.
Vest4		0.67
MutPred		0.46		Gain of sheet (P = 0.0028);Gain of sheet (P = 0.0028);Gain of sheet (P = 0.0028);
MVP		0.52
MPC		3.4
ClinPred		0.98	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.63
gMVP		0.75

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-89650797;