1-113699763-T-C

Variant summary

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

The NM_001323043.2(PHTF1):c.2083A>G(p.Lys695Glu) 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)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PHTF1 NM_001323043.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.99

Genes affected

PHTF1 (HGNC:8939): (putative homeodomain transcription factor 1) Predicted to be located in cis-Golgi network and endoplasmic reticulum membrane. Predicted to be integral component of membrane. [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	UniProt
PHTF1	NM_001323043.2	c.2083A>G	p.Lys695Glu	missense_variant	17/19	ENST00000369604.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PHTF1	ENST00000369604.6	c.2083A>G	p.Lys695Glu	missense_variant	17/19	5	NM_001323043.2	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1302496 Hom.: 0 Cov.: 20 AF XY: 0.00 AC XY: 0 AN XY: 650678

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

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

Jan 30, 2024

The c.2083A>G (p.K695E) alteration is located in exon 16 (coding exon 16) of the PHTF1 gene. This alteration results from a A to G substitution at nucleotide position 2083, causing the lysine (K) at amino acid position 695 to be replaced by a glutamic acid (E). 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	0.95
BayesDel_addAF	Pathogenic	0.46	D
BayesDel_noAF	Pathogenic	0.43
Cadd	Pathogenic	27
Dann	Pathogenic	1.0
DEOGEN2	Uncertain	0.55	D;.;.;D
Eigen	Pathogenic	0.87
Eigen_PC	Pathogenic	0.87
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	0.99	D;D;D;.
M_CAP	Benign	0.036	D
MetaRNN	Uncertain	0.53	D;D;D;D
MetaSVM	Uncertain	-0.20	T
MutationAssessor	Uncertain	2.3	M;.;.;M
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Pathogenic	0.83	D
PROVEAN	Uncertain	-3.4	D;D;D;D
REVEL	Uncertain	0.55
Sift	Uncertain	0.0010	D;D;D;D
Sift4G	Pathogenic	0.0	D;D;D;D
Polyphen		1.0	D;.;.;D
Vest4		0.71
MutPred		0.23		Loss of methylation at K695 (P = 0.0032);.;.;Loss of methylation at K695 (P = 0.0032);
MVP		0.25
MPC		0.76
ClinPred		0.98	D
GERP RS		6.2
Varity_R		0.79
gMVP		0.80

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: chr1-114242385;