rs7297245

chr12-95980836-C-Achr12-95980836-C-Gchr12-95980836-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_002108.4(HAL):c.1315G>T(p.Val439Phe) 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V439I) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: HAL NM_002108.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.14

Genes affected

HAL (HGNC:4806): (histidine ammonia-lyase) Histidine ammonia-lyase is a cytosolic enzyme catalyzing the first reaction in histidine catabolism, the nonoxidative deamination of L-histidine to trans-urocanic acid. Histidine ammonia-lyase defects cause histidinemia which is characterized by increased histidine and histamine and decreased urocanic acid in body fluids. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.38067642).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HAL	NM_002108.4	c.1315G>T	p.Val439Phe	missense_variant	16/21	ENST00000261208.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HAL	ENST00000261208.8	c.1315G>T	p.Val439Phe	missense_variant	16/21	1	NM_002108.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.25
BayesDel_addAF	Benign	-0.00083	T
BayesDel_noAF	Benign	-0.24
Cadd	Benign	18
Dann	Uncertain	0.99
DEOGEN2	Uncertain	0.56	D;.;.
Eigen	Benign	-0.43
Eigen_PC	Benign	-0.30
FATHMM_MKL	Uncertain	0.88	D
LIST_S2	Uncertain	0.89	D;D;D
M_CAP	Uncertain	0.086	D
MetaRNN	Benign	0.38	T;T;T
MetaSVM	Benign	-0.39	T
MutationAssessor	Benign	1.5	L;.;L
MutationTaster	Benign	1.0	P;P;P
PrimateAI	Uncertain	0.66	T
PROVEAN	Uncertain	-2.6	D;D;D
REVEL	Uncertain	0.38
Sift	Benign	0.047	D;D;D
Sift4G	Uncertain	0.0040	D;D;D
Polyphen		0.025	B;.;.
Vest4		0.42
MutPred		0.57		Gain of catalytic residue at N443 (P = 0);.;Gain of catalytic residue at N443 (P = 0);
MVP		0.62
MPC		0.27
ClinPred		0.98	D
GERP RS		4.8
Varity_R		0.39
gMVP		0.79

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

LitVar

Other links and lift over

dbSNP: rs7297245; hg19: chr12-96374614;