dbSNP rs375027534: ALPL:p.Leu286Leu (chr1-21570370-A-G) – ACMG Classification: Benign (-17 pts)

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS2

The NM_000478.6(ALPL):c.858A>G(p.Leu286Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000897 in 1,612,892 control chromosomes in the GnomAD database, including 26 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00061 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00093 ( 25 hom. )

Consequence

ALPL
NM_000478.6 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.0150

Publications

1 publications found

Variant links:

Genes affected

ALPL (HGNC:438): (alkaline phosphatase, biomineralization associated) This gene encodes a member of the alkaline phosphatase family of proteins. There are at least four distinct but related alkaline phosphatases: intestinal, placental, placental-like, and liver/bone/kidney (tissue non-specific). The first three are located together on chromosome 2, while the tissue non-specific form is located on chromosome 1. The product of this gene is a membrane bound glycosylated enzyme that is not expressed in any particular tissue and is, therefore, referred to as the tissue-nonspecific form of the enzyme. Alternative splicing results in multiple transcript variants, at least one of which encodes a preproprotein that is proteolytically processed to generate the mature enzyme. This enzyme may play a role in bone mineralization. Mutations in this gene have been linked to hypophosphatasia, a disorder that is characterized by hypercalcemia and skeletal defects. [provided by RefSeq, Oct 2015]

ALPL Gene-Disease associations (from GenCC):

adult hypophosphatasia
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen
ALPL-related autosomal dominant hypophosphatasia
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
childhood hypophosphatasia
Inheritance: AD, AR Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, Laboratory for Molecular Medicine, ClinGen
ALPL-related autosomal recessive hypophosphatasia
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hypophosphatasia
Inheritance: AR Classification: DEFINITIVE Submitted by: Myriad Women’s Health, G2P
infantile hypophosphatasia
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, Orphanet, Labcorp Genetics (formerly Invitae)
odontohypophosphatasia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
perinatal lethal hypophosphatasia
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ALPL links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.51).

BP6

Variant 1-21570370-A-G is Benign according to our data. Variant chr1-21570370-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 585388.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.015 with no splicing effect.

BS2

High Homozygotes in GnomAdExome4 at 25 AD,AR gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000478.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ALPL	NM_000478.6	MANE Select	c.858A>G	p.Leu286Leu	synonymous	Exon 8 of 12	NP_000469.3
ALPL	NM_001369803.2		c.858A>G	p.Leu286Leu	synonymous	Exon 8 of 12	NP_001356732.1	P05186-1
ALPL	NM_001369804.2		c.858A>G	p.Leu286Leu	synonymous	Exon 8 of 12	NP_001356733.1	P05186-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ALPL	ENST00000374840.8	TSL:1 MANE Select	c.858A>G	p.Leu286Leu	synonymous	Exon 8 of 12	ENSP00000363973.3	P05186-1
ALPL	ENST00000374832.5	TSL:2	c.858A>G	p.Leu286Leu	synonymous	Exon 8 of 12	ENSP00000363965.1	P05186-1
ALPL	ENST00000879459.1		c.738A>G	p.Leu246Leu	synonymous	Exon 6 of 10	ENSP00000549518.1

Frequencies

GnomAD3 genomes

AF:

0.000626

AC:

AN:

151832

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000726

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.0181

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000589

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.00178

AC:

448

AN:

251194

AF XY:

0.00243

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00147

GnomAD4 exome

AF:

0.000927

AC:

1354

AN:

1460942

Hom.:

Cov.:

AF XY:

0.00133

AC XY:

969

AN XY:

726800

show subpopulations

African (AFR)

AF:

0.0000598

AC:

AN:

33460

American (AMR)

AF:

0.0000447

AC:

AN:

44714

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26130

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39686

South Asian (SAS)

AF:

0.0150

AC:

1290

AN:

86226

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53386

Middle Eastern (MID)

AF:

0.000520

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.00000630

AC:

AN:

1111234

Other (OTH)

AF:

0.000812

AC:

AN:

60340

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

148

223

297

371

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

110

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.000612

AC:

AN:

151950

Hom.:

Cov.:

AF XY:

0.000875

AC XY:

AN XY:

74248

show subpopulations

African (AFR)

AF:

0.0000724

AC:

AN:

41460

American (AMR)

AF:

0.00

AC:

AN:

15274

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3468

East Asian (EAS)

AF:

0.00

AC:

AN:

5140

South Asian (SAS)

AF:

0.0177

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10538

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000589

AC:

AN:

67942

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.523

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000227

Hom.:

Bravo

AF:

0.000110

Asia WGS

AF:

0.00462

AC:

AN:

3478

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (3)

ALPL-related disorder (1)

Hypophosphatasia (1)

Osteogenesis imperfecta (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.51

CADD

Benign

(source)

DANN

Benign

0.66

PhyloP100

0.015

PromoterAI

-0.11

Neutral

(source)

Mutation Taster

=297/3

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over