chr3-52211468-C-T
Variant summary
Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate
The NM_000688.6(ALAS1):c.1516C>T(p.Arg506Cys) variant causes a missense change. The variant allele was found at a frequency of 0.000013 in 1,614,124 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000013 ( 0 hom. )
Consequence
ALAS1
NM_000688.6 missense
NM_000688.6 missense
Scores
9
8
1
Clinical Significance
Conservation
PhyloP100: 4.93
Genes affected
ALAS1 (HGNC:396): (5'-aminolevulinate synthase 1) This gene encodes the mitochondrial enzyme which is catalyzes the rate-limiting step in heme (iron-protoporphyrin) biosynthesis. The enzyme encoded by this gene is the housekeeping enzyme; a separate gene encodes a form of the enzyme that is specific for erythroid tissue. The level of the mature encoded protein is regulated by heme: high levels of heme down-regulate the mature enzyme in mitochondria while low heme levels up-regulate. A pseudogene of this gene is located on chromosome 12. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jan 2015]
Genome browser will be placed here
ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 4 ACMG points.
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
MetaRNN computational evidence supports a deleterious effect, 0.888
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
ALAS1 | NM_000688.6 | c.1516C>T | p.Arg506Cys | missense_variant | 10/12 | ENST00000484952.6 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
ALAS1 | ENST00000484952.6 | c.1516C>T | p.Arg506Cys | missense_variant | 10/12 | 1 | NM_000688.6 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0000131 AC: 2AN: 152234Hom.: 0 Cov.: 32
GnomAD3 genomes
?
AF:
AC:
2
AN:
152234
Hom.:
Cov.:
32
Gnomad AFR
AF:
Gnomad AMI
AF:
Gnomad AMR
AF:
Gnomad ASJ
AF:
Gnomad EAS
AF:
Gnomad SAS
AF:
Gnomad FIN
AF:
Gnomad MID
AF:
Gnomad NFE
AF:
Gnomad OTH
AF:
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251370Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135870
GnomAD3 exomes
AF:
AC:
1
AN:
251370
Hom.:
AF XY:
AC XY:
0
AN XY:
135870
Gnomad AFR exome
AF:
Gnomad AMR exome
AF:
Gnomad ASJ exome
AF:
Gnomad EAS exome
AF:
Gnomad SAS exome
AF:
Gnomad FIN exome
AF:
Gnomad NFE exome
AF:
Gnomad OTH exome
AF:
GnomAD4 exome AF: 0.0000130 AC: 19AN: 1461890Hom.: 0 Cov.: 32 AF XY: 0.0000124 AC XY: 9AN XY: 727246
GnomAD4 exome
AF:
AC:
19
AN:
1461890
Hom.:
Cov.:
32
AF XY:
AC XY:
9
AN XY:
727246
Gnomad4 AFR exome
AF:
Gnomad4 AMR exome
AF:
Gnomad4 ASJ exome
AF:
Gnomad4 EAS exome
AF:
Gnomad4 SAS exome
AF:
Gnomad4 FIN exome
AF:
Gnomad4 NFE exome
AF:
Gnomad4 OTH exome
AF:
GnomAD4 genome ? AF: 0.0000131 AC: 2AN: 152234Hom.: 0 Cov.: 32 AF XY: 0.0000134 AC XY: 1AN XY: 74366
GnomAD4 genome
?
AF:
AC:
2
AN:
152234
Hom.:
Cov.:
32
AF XY:
AC XY:
1
AN XY:
74366
Gnomad4 AFR
AF:
Gnomad4 AMR
AF:
Gnomad4 ASJ
AF:
Gnomad4 EAS
AF:
Gnomad4 SAS
AF:
Gnomad4 FIN
AF:
Gnomad4 NFE
AF:
Gnomad4 OTH
AF:
Bravo
AF:
ExAC
?
AF:
AC:
1
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Aug 21, 2023 | The c.1516C>T (p.R506C) alteration is located in exon 10 (coding exon 8) of the ALAS1 gene. This alteration results from a C to T substitution at nucleotide position 1516, causing the arginine (R) at amino acid position 506 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
BayesDel_addAF
Uncertain
D
BayesDel_noAF
Uncertain
Cadd
Pathogenic
Dann
Pathogenic
DEOGEN2
Pathogenic
D;D;D;D
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
M_CAP
Uncertain
D
MetaRNN
Pathogenic
D;D;D;D
MetaSVM
Pathogenic
D
MutationAssessor
Uncertain
M;M;M;M
MutationTaster
Benign
D;D;D;D
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;D;D;D
REVEL
Pathogenic
Sift
Uncertain
D;D;D;D
Sift4G
Uncertain
D;D;D;D
Polyphen
D;D;D;D
Vest4
MutPred
Loss of disorder (P = 0.0157);Loss of disorder (P = 0.0157);Loss of disorder (P = 0.0157);Loss of disorder (P = 0.0157);
MVP
MPC
0.95
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at