20-56516977-G-T

Position:

• chr20-56516977-G-T

Variant summary

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

The NM_016407.5(RTF2):​c.634G>T​(p.Asp212Tyr) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: RTF2 NM_016407.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.82

Genes affected

RTF2 (HGNC:15890): (replication termination factor 2) Enables DNA binding activity. Involved in cellular response to hydroxyurea and regulation of DNA stability. Located in replication fork. [provided by Alliance of Genome Resources, Apr 2022]

GCNT7 (HGNC:16099): (glucosaminyl (N-acetyl) transferase family member 7) Predicted to enable acetylglucosaminyltransferase activity. Predicted to be involved in protein glycosylation. Predicted to be located in Golgi membrane. Predicted to be integral component of membrane. [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=0.1758835).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RTF2	NM_016407.5	c.634G>T	p.Asp212Tyr	missense_variant	7/9	ENST00000357348.10
GCNT7	NR_160308.1	n.144-2672C>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RTF2	ENST00000357348.10	c.634G>T	p.Asp212Tyr	missense_variant	7/9	1	NM_016407.5	P1
GCNT7	ENST00000243913.8	c.-929-2672C>A		intron_variant		2		P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

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 04, 2024

The c.634G>T (p.D212Y) alteration is located in exon 7 (coding exon 7) of the RTFDC1 gene. This alteration results from a G to T substitution at nucleotide position 634, causing the aspartic acid (D) at amino acid position 212 to be replaced by a tyrosine (Y). 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	0.099
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	23
DANN	Uncertain	0.98
DEOGEN2	Benign	0.013	.;.;T
Eigen	Benign	-0.21
Eigen_PC	Benign	-0.21
FATHMM_MKL	Benign	0.70	D
LIST_S2	Benign	0.74	T;T;T
M_CAP	Benign	0.0095	T
MetaRNN	Benign	0.18	T;T;T
MetaSVM	Benign	-0.92	T
MutationTaster	Benign	0.97	N;N;N;N
PrimateAI	Benign	0.27	T
PROVEAN	Benign	-1.3	.;.;N
REVEL	Benign	0.12
Sift	Uncertain	0.0090	.;.;D
Sift4G	Uncertain	0.020	D;D;D
Vest4		0.22
MutPred		0.34		Gain of phosphorylation at D242 (P = 0.0055);.;Gain of phosphorylation at D242 (P = 0.0055);
MVP		0.51
MPC		0.51
ClinPred		0.64	D
GERP RS		4.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
gMVP		0.25

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.10		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: chr20-55092033;