2-232379002-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001632.5(ALPP):​c.108C>T​(p.Arg36Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0025 in 1,614,076 control chromosomes in the GnomAD database, including 106 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.013 ( 50 hom., cov: 32)
Exomes 𝑓: 0.0014 ( 56 hom. )

Consequence

ALPP
NM_001632.5 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -2.25
Variant links:
Genes affected
ALPP (HGNC:439): (alkaline phosphatase, placental) The protein encoded by this gene is an alkaline phosphatase, a metalloenzyme that catalyzes the hydrolysis of phosphoric acid monoesters. It belongs to a multigene family composed of four alkaline phosphatase isoenzymes. The enzyme functions as a homodimer and has a catalytic site containing one magnesium and two zinc ions, which are required for its enzymatic function. One of the main sources of this enzyme is the liver, and thus, it's one of several indicators of liver injury in different clinical conditions. In pregnant women, this protein is primarily expressed in placental and endometrial tissue, however, strong ectopic expression has been detected in ovarian adenocarcinoma, serous cystadenocarcinoma, and other ovarian cancer cells. [provided by RefSeq, Aug 2020]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.84).
BP6
Variant 2-232379002-C-T is Benign according to our data. Variant chr2-232379002-C-T is described in ClinVar as [Benign]. Clinvar id is 778046.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BP7
Synonymous conserved (PhyloP=-2.24 with no splicing effect.
BS1
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.013 (1983/152240) while in subpopulation AFR AF= 0.0445 (1850/41534). AF 95% confidence interval is 0.0429. There are 50 homozygotes in gnomad4. There are 986 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
BS2
High Homozygotes in GnomAd4 at 50 AR gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
ALPPNM_001632.5 linkuse as main transcriptc.108C>T p.Arg36Arg synonymous_variant 2/11 ENST00000392027.3 NP_001623.3 P05187B2R7C7
LOC124906123XR_007088121.1 linkuse as main transcriptn.31G>A non_coding_transcript_exon_variant 1/4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
ALPPENST00000392027.3 linkuse as main transcriptc.108C>T p.Arg36Arg synonymous_variant 2/111 NM_001632.5 ENSP00000375881.2 P05187
ALPPENST00000474529.1 linkuse as main transcriptn.187C>T non_coding_transcript_exon_variant 2/42

Frequencies

GnomAD3 genomes
AF:
0.0130
AC:
1970
AN:
152122
Hom.:
47
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0443
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00609
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000415
Gnomad FIN
AF:
0.00
Gnomad MID
AF:
0.00316
Gnomad NFE
AF:
0.000132
Gnomad OTH
AF:
0.0139
GnomAD3 exomes
AF:
0.00358
AC:
900
AN:
251368
Hom.:
26
AF XY:
0.00266
AC XY:
362
AN XY:
135890
show subpopulations
Gnomad AFR exome
AF:
0.0478
Gnomad AMR exome
AF:
0.00252
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.000131
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000194
Gnomad OTH exome
AF:
0.00179
GnomAD4 exome
AF:
0.00140
AC:
2053
AN:
1461836
Hom.:
56
Cov.:
91
AF XY:
0.00118
AC XY:
859
AN XY:
727222
show subpopulations
Gnomad4 AFR exome
AF:
0.0485
Gnomad4 AMR exome
AF:
0.00311
Gnomad4 ASJ exome
AF:
0.0000383
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.0000580
Gnomad4 FIN exome
AF:
0.0000187
Gnomad4 NFE exome
AF:
0.000102
Gnomad4 OTH exome
AF:
0.00273
GnomAD4 genome
AF:
0.0130
AC:
1983
AN:
152240
Hom.:
50
Cov.:
32
AF XY:
0.0132
AC XY:
986
AN XY:
74446
show subpopulations
Gnomad4 AFR
AF:
0.0445
Gnomad4 AMR
AF:
0.00608
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000208
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.000132
Gnomad4 OTH
AF:
0.0137
Alfa
AF:
0.00637
Hom.:
7
Bravo
AF:
0.0150
EpiCase
AF:
0.000218
EpiControl
AF:
0.000178

ClinVar

Significance: Benign
Submissions summary: Benign:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpMay 30, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.84
CADD
Benign
5.7
DANN
Benign
0.93

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Other links and lift over

dbSNP: rs61747708; hg19: chr2-233243712; API