chr14-61720467-G-T

Position:

• chr14-61720467-G-T

Variant summary

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

The NM_001530.4(HIF1A):​c.121G>T​(p.Ala41Ser) 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A41V) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: HIF1A NM_001530.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.00

Genes affected

HIF1A (HGNC:4910): (hypoxia inducible factor 1 subunit alpha) This gene encodes the alpha subunit of transcription factor hypoxia-inducible factor-1 (HIF-1), which is a heterodimer composed of an alpha and a beta subunit. HIF-1 functions as a master regulator of cellular and systemic homeostatic response to hypoxia by activating transcription of many genes, including those involved in energy metabolism, angiogenesis, apoptosis, and other genes whose protein products increase oxygen delivery or facilitate metabolic adaptation to hypoxia. HIF-1 thus plays an essential role in embryonic vascularization, tumor angiogenesis and pathophysiology of ischemic disease. Alternatively spliced transcript variants encoding different isoforms have been identified for this gene. [provided by RefSeq, Jul 2011]

HIF1A-AS3 (HGNC:54284): (HIF1A antisense RNA 3)

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
HIF1A	NM_001530.4	c.121G>T	p.Ala41Ser	missense_variant	2/15	ENST00000337138.9
HIF1A-AS3	NR_144368.1	n.214-3450C>A		intron_variant, non_coding_transcript_variant
HIF1A	NM_001243084.2	c.193G>T	p.Ala65Ser	missense_variant	2/15
HIF1A	NM_181054.3	c.121G>T	p.Ala41Ser	missense_variant	2/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HIF1A	ENST00000337138.9	c.121G>T	p.Ala41Ser	missense_variant	2/15	1	NM_001530.4	P4
HIF1A-AS3	ENST00000660325.2	n.216-6465C>A		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

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

Jul 26, 2022

The c.121G>T (p.A41S) alteration is located in exon 2 (coding exon 2) of the HIF1A gene. This alteration results from a G to T substitution at nucleotide position 121, causing the alanine (A) at amino acid position 41 to be replaced by a serine (S). 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	0.26
BayesDel_addAF	Benign	-0.014	T
BayesDel_noAF	Benign	-0.26
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.55	D;T;.;.
Eigen	Uncertain	0.39
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Uncertain	0.95	D;D;D;D
M_CAP	Benign	0.021	T
MetaRNN	Uncertain	0.42	T;T;T;T
MetaSVM	Benign	-0.89	T
MutationAssessor	Benign	1.3	L;.;L;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.77	T
PROVEAN	Benign	-1.8	N;N;N;N
REVEL	Benign	0.11
Sift	Benign	0.082	T;T;T;T
Sift4G	Benign	0.10	T;T;T;T
Polyphen		0.49	P;P;.;.
Vest4		0.63
MutPred		0.61		.;Gain of phosphorylation at A42 (P = 0.0673);.;.;
MVP		0.53
MPC		1.0
ClinPred		0.86	D
GERP RS		5.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.38
gMVP		0.40

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: chr14-62187185;