chr14-105211286-A-T

Position:

• chr14-105211286-A-T

Variant summary

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

The NM_001519.4(BRF1):​c.1832T>A​(p.Leu611His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 14/20 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: BRF1 NM_001519.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.578

Genes affected

BRF1 (HGNC:11551): (BRF1 RNA polymerase III transcription initiation factor subunit) This gene encodes one of the three subunits of the RNA polymerase III transcription factor complex. This complex plays a central role in transcription initiation by RNA polymerase III on genes encoding tRNA, 5S rRNA, and other small structural RNAs. The gene product belongs to the TF2B family. Several alternatively spliced variants encoding different isoforms, that function at different promoters transcribed by RNA polymerase III, have been identified. [provided by RefSeq, Jun 2011]

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=0.1412949).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BRF1	NM_001519.4	c.1832T>A	p.Leu611His	missense_variant	17/18	ENST00000547530.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BRF1	ENST00000547530.7	c.1832T>A	p.Leu611His	missense_variant	17/18	1	NM_001519.4	P1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

Asia WGS AF: 0.000577 AC: 2 AN: 3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Aug 18, 2024

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis indicates that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.067
BayesDel_addAF	Benign	-0.092	T
BayesDel_noAF	Benign	-0.37
CADD	Benign	7.0
DANN	Benign	0.84
DEOGEN2	Benign	0.068	.;T;.;.;.;.
Eigen	Benign	-0.75
Eigen_PC	Benign	-0.92
FATHMM_MKL	Benign	0.083	N
LIST_S2	Benign	0.67	T;T;T;T;T;T
M_CAP	Benign	0.056	D
MetaRNN	Benign	0.14	T;T;T;T;T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Uncertain	2.3	.;M;.;.;.;.
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.42	T
PROVEAN	Benign	-2.3	N;.;N;N;N;N
REVEL	Benign	0.069
Sift	Benign	0.48	T;.;T;T;T;T
Sift4G	Benign	0.54	T;T;T;T;T;T
Polyphen		0.51, 0.70	.;P;P;.;.;.
Vest4		0.34
MutPred		0.34		.;Gain of catalytic residue at L610 (P = 0.0058);.;.;.;.;
MVP		0.34
ClinPred		0.20	T
GERP RS		-2.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.060
gMVP		0.32

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr14-105677623;