chr12-8921619-T-C

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_004426.3(PHC1):c.325T>C(p.Ser109Pro) variant causes a missense change. The variant allele was found at a frequency of 0.0000178 in 1,461,384 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000018 ( 0 hom. )

Consequence

PHC1
NM_004426.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.08

Publications

0 publications found

Variant links:

Genes affected

PHC1 (HGNC:3182): (polyhomeotic homolog 1) This gene is a homolog of the Drosophila polyhomeotic gene, which is a member of the Polycomb group of genes. The gene product is a component of a multimeric protein complex that contains EDR2 and the vertebrate Polycomb protein BMH1. The gene product, the EDR2 protein, and the Drosophila polyhomeotic protein share 2 highly conserved domains, named homology domains I and II. These domains are involved in protein-protein interactions and may mediate heterodimerization of the protein encoded by this gene and the EDR2 protein. [provided by RefSeq, Jul 2008]

PHC1 Gene-Disease associations (from GenCC):

autosomal recessive primary microcephaly
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
microcephaly 11, primary, autosomal recessive
Inheritance: AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P

PHC1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.14732182).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PHC1	NM_004426.3 link	c.325T>C	p.Ser109Pro	missense_variant	Exon 5 of 15	ENST00000544916.6	NP_004417.2	P78364Q6GMQ3Q6N083

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PHC1	ENST00000544916.6 link	c.325T>C	p.Ser109Pro	missense_variant	Exon 5 of 15	1	NM_004426.3	ENSP00000437659.1		P78364

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000160

AC:

AN:

250602

AF XY:

0.0000148

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000353

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000178

AC:

AN:

1461384

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727014

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33458

American (AMR)

AF:

0.00

AC:

AN:

44546

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26100

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.00

AC:

AN:

86176

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.0000198

AC:

AN:

1111860

Other (OTH)

AF:

0.0000497

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Aug 08, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.325T>C (p.S109P) alteration is located in exon 5 (coding exon 4) of the PHC1 gene. This alteration results from a T to C substitution at nucleotide position 325, causing the serine (S) at amino acid position 109 to be replaced by a proline (P). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.39

BayesDel_addAF

Benign

-0.19

BayesDel_noAF

Benign

-0.40

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0066

T;T;T;T;T;T

Eigen

Uncertain

0.22

Eigen_PC

Uncertain

0.28

FATHMM_MKL

Uncertain

0.89

LIST_S2

Benign

0.72

T;.;T;T;T;T

M_CAP

Benign

0.013

MetaRNN

Benign

0.15

T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

-0.10

.;N;.;N;.;.

PhyloP100

4.1

PrimateAI

Uncertain

0.68

PROVEAN

Benign

1.6

N;N;N;N;N;N

REVEL

Benign

0.13

Sift

Benign

0.22

T;T;T;T;T;T

Sift4G

Benign

0.11

T;T;T;T;T;T

Polyphen

1.0

.;D;.;D;.;.

Vest4

0.68, 0.69, 0.68

MutPred

0.22

Gain of catalytic residue at L113 (P = 0.0075);Gain of catalytic residue at L113 (P = 0.0075);.;Gain of catalytic residue at L113 (P = 0.0075);Gain of catalytic residue at L113 (P = 0.0075);.;

MVP

0.22

MPC

2.0

ClinPred

0.76

GERP RS

4.5

Varity_R

0.13

gMVP

0.55

Mutation Taster

=79/21

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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chr12-8921619-T-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over