dbSNP rs139401187: PITX2:p.Leu288Leu (chr4-110618238-G-A) – ACMG Classification: Benign (-10 pts)

Variant summary

Our verdict is Benign. The variant received -10 ACMG points: 0P and 10B. BP4_StrongBP6BP7BS2

The NM_000325.6(PITX2):c.862C>T(p.Leu288Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000193 in 1,614,228 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00017 ( 1 hom. )

Consequence

PITX2
NM_000325.6 synonymous

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:8

Conservation

PhyloP100: 2.22

Publications

3 publications found

Variant links:

Genes affected

PITX2 (HGNC:9005): (paired like homeodomain 2) This gene encodes a member of the RIEG/PITX homeobox family, which is in the bicoid class of homeodomain proteins. The encoded protein acts as a transcription factor and regulates procollagen lysyl hydroxylase gene expression. This protein plays a role in the terminal differentiation of somatotroph and lactotroph cell phenotypes, is involved in the development of the eye, tooth and abdominal organs, and acts as a transcriptional regulator involved in basal and hormone-regulated activity of prolactin. Mutations in this gene are associated with Axenfeld-Rieger syndrome, iridogoniodysgenesis syndrome, and sporadic cases of Peters anomaly. A similar protein in other vertebrates is involved in the determination of left-right asymmetry during development. Alternatively spliced transcript variants encoding distinct isoforms have been described. [provided by RefSeq, Jul 2008]

PITX2 Gene-Disease associations (from GenCC):

anterior segment dysgenesis 4
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
Axenfeld-Rieger syndrome type 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae)
ring dermoid of cornea
Inheritance: AD, Unknown Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
aniridia
Inheritance: AD Classification: MODERATE Submitted by: Genomics England PanelApp
Axenfeld anomaly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Axenfeld-Rieger syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial atrial fibrillation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Rieger anomaly
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Peters anomaly
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

PITX2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -10 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.56).

BP6

Variant 4-110618238-G-A is Benign according to our data. Variant chr4-110618238-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 347298.

BP7

Synonymous conserved (PhyloP=2.22 with no splicing effect.

BS2

High AC in GnomAd4 at 59 AD,Unknown gene.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000325.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PITX2	NM_000325.6	MANE Select	c.862C>T	p.Leu288Leu	synonymous	Exon 3 of 3	NP_000316.2
PITX2	NM_001204397.2		c.841C>T	p.Leu281Leu	synonymous	Exon 6 of 6	NP_001191326.1	Q99697-1
PITX2	NM_001204398.1		c.841C>T	p.Leu281Leu	synonymous	Exon 5 of 5	NP_001191327.1	Q99697-1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
PITX2	ENST00000644743.1	MANE Select	c.862C>T	p.Leu288Leu	synonymous	Exon 3 of 3	ENSP00000495061.1	Q99697-2
PITX2	ENST00000355080.9	TSL:1	c.703C>T	p.Leu235Leu	synonymous	Exon 4 of 4	ENSP00000347192.5	Q99697-3
PITX2	ENST00000354925.6	TSL:2	c.841C>T	p.Leu281Leu	synonymous	Exon 7 of 7	ENSP00000347004.2	Q99697-1

Frequencies

GnomAD3 genomes

AF:

0.000388

AC:

AN:

152222

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000265

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00190

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000176

Gnomad OTH

AF:

0.00287

GnomAD2 exomes

AF:

0.000231

AC:

AN:

251434

AF XY:

0.000213

show subpopulations

Gnomad AFR exome

AF:

0.000308

Gnomad AMR exome

AF:

0.000491

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000273

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000173

AC:

253

AN:

1461888

Hom.:

Cov.:

AF XY:

0.000177

AC XY:

129

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.000508

AC:

AN:

33480

American (AMR)

AF:

0.000715

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000812

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.00295

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000139

AC:

155

AN:

1112010

Other (OTH)

AF:

0.000414

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.478

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

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

GnomAD4 genome

AF:

0.000387

AC:

AN:

152340

Hom.:

Cov.:

AF XY:

0.000349

AC XY:

AN XY:

74494

show subpopulations

African (AFR)

AF:

0.000265

AC:

AN:

41580

American (AMR)

AF:

0.00189

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000176

AC:

AN:

68024

Other (OTH)

AF:

0.00284

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.482

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

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:

0.000307

Hom.:

Bravo

AF:

0.000676

EpiCase

AF:

0.000436

EpiControl

AF:

0.000711

ClinVar

ClinVar submissions

Significance:Conflicting classifications of pathogenicity

Revision:criteria provided, conflicting classifications

View on ClinVar

Pathogenic

VUS

Benign

Condition

Anterior segment dysgenesis 4 (1)

Anterior segment dysgenesis 4;C3714873:Axenfeld-Rieger syndrome type 1 (1)

Axenfeld-Rieger syndrome type 1 (1)

Cataract (1)

Hypoplasia of the iris (1)

Irido-corneo-trabecular dysgenesis (1)

not provided (1)

PITX2-Related Eye Abnormalities (1)

Ring dermoid of cornea (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.56

CADD

Benign

(source)

DANN

Benign

0.95

PhyloP100

2.2

Mutation Taster

=99/1

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

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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