NM_000306.4:c.688G>A

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 13 ACMG points: 13P and 0B. PP2PP3_StrongPP5_Very_Strong

The NM_000306.4(POU1F1):c.688G>A(p.Glu230Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000093 in 1,613,616 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 Likely pathogenic (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000096 ( 0 hom. )

Consequence

POU1F1
NM_000306.4 missense

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:6

Conservation

PhyloP100: 7.54

Publications

11 publications found

Variant links:

Genes affected

POU1F1 (HGNC:9210): (POU class 1 homeobox 1) This gene encodes a member of the POU family of transcription factors that regulate mammalian development. The protein regulates expression of several genes involved in pituitary development and hormone expression. Mutations in this genes result in combined pituitary hormone deficiency. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

POU1F1 Gene-Disease associations (from GenCC):

pituitary hormone deficiency, combined, 1
Inheritance: AD, AR, SD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
combined pituitary hormone deficiencies, genetic form
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
hypothyroidism due to deficient transcription factors involved in pituitary development or function
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
isolated growth hormone deficiency type II
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

POU1F1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 13 ACMG points.

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 15 curated pathogenic missense variants (we use a threshold of 10). The gene has 3 curated benign missense variants. Gene score misZ: 0.45719 (below the threshold of 3.09). Trascript score misZ: 0.74343 (below the threshold of 3.09). GenCC associations: The gene is linked to pituitary hormone deficiency, combined, 1, isolated growth hormone deficiency type II, combined pituitary hormone deficiencies, genetic form, hypothyroidism due to deficient transcription factors involved in pituitary development or function.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.976

PP5

Variant 3-87260082-C-T is Pathogenic according to our data. Variant chr3-87260082-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 13613.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000306.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POU1F1	NM_000306.4	MANE Select	c.688G>A	p.Glu230Lys	missense	Exon 6 of 6	NP_000297.1
	POU1F1	NM_001122757.3		c.766G>A	p.Glu256Lys	missense	Exon 6 of 6	NP_001116229.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
POU1F1	ENST00000350375.7	TSL:1 MANE Select	c.688G>A	p.Glu230Lys	missense	Exon 6 of 6	ENSP00000263781.2
POU1F1	ENST00000560656.1	TSL:5	c.462G>A	p.Trp154*	stop_gained	Exon 4 of 4	ENSP00000452610.1
POU1F1	ENST00000344265.8	TSL:5	c.766G>A	p.Glu256Lys	missense	Exon 6 of 6	ENSP00000342931.3

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151970

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000240

AC:

AN:

250200

AF XY:

0.0000296

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000443

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000958

AC:

AN:

1461646

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727114

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.0000224

AC:

AN:

44706

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39676

South Asian (SAS)

AF:

0.00

AC:

AN:

86244

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53380

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000117

AC:

AN:

1111898

Other (OTH)

AF:

0.00

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.432

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:

0.00000658

AC:

AN:

151970

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74206

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41358

American (AMR)

AF:

0.00

AC:

AN:

15248

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5178

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10580

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

67996

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.675

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00000944

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000247

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000178

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:6

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Pituitary hormone deficiency, combined, 1

Pathogenic:2

Aug 01, 2005

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

Jun 30, 2022

Department of Genetics, Sultan Qaboos University Hospital

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not provided

Pathogenic:2

Jul 27, 2023

GeneDx

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Published functional studies demonstrate a damaging effect on transcription activation (Liang et al., 1995; Turton et al., 2005); This variant is associated with the following publications: (PMID: 19837867, 36344539, 31702014, 34815942, 20852587, 15928241, 7592721, 11924936, 33742319)

Jul 13, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Experimental studies have shown that this missense change affects POU1F1 function (PMID: 15928241). This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 230 of the POU1F1 protein (p.Glu230Lys). This variant is present in population databases (rs104893764, gnomAD 0.005%). This missense change has been observed in individuals with autosomal recessive combined pituitary hormone deficiency (PMID: 11924936, 15928241). It has also been observed to segregate with disease in related individuals. ClinVar contains an entry for this variant (Variation ID: 13613). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) has been performed at Invitae for this missense variant, however the output from this modeling did not meet the statistical confidence thresholds required to predict the impact of this variant on POU1F1 protein function. For these reasons, this variant has been classified as Pathogenic.

POU1F1-related disorder

Pathogenic:1

Sep 27, 2024

PreventionGenetics, part of Exact Sciences

Significance:Likely pathogenic

Review Status:no assertion criteria provided

Collection Method:clinical testing

The POU1F1 c.688G>A variant is predicted to result in the amino acid substitution p.Glu230Lys. This variant has been reported in the homozygous and compound heterozygous states in multiple patients with POU1F1 related pituitary hormone deficiency, and functional studies support its pathogenicity (Gat-Yablonski et al. 2002. PubMed ID: 11924936; Turton et al. 2005. PubMed ID: 15928241). This variant is reported in 0.0044% of alleles in individuals of European (Non-Finnish) descent in gnomAD. This variant is interpreted as likely pathogenic.

Combined pituitary hormone deficiencies, genetic form

Pathogenic:1

Jun 10, 2025

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: POU1F1 c.688G>A (p.Glu230Lys) results in a conservative amino acid change in the encoded protein sequence. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change. The variant allele was found at a frequency of 2.4e-05 in 250200 control chromosomes (gnomAD). c.688G>A has been observed in multiple individuals affected with Combined Pituitary Hormone Deficiency (e.g., Gat-Yablonski_2002, Al-Kasbi_2022). These data indicate that the variant is very likely to be associated with disease. The following publications have been ascertained in the context of this evaluation (PMID: 11924936, 36344539). ClinVar contains an entry for this variant (Variation ID: 13613). Based on the evidence outlined above, the variant was classified as pathogenic.

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.45

BayesDel_noAF

Pathogenic

0.54

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.94

Eigen

Pathogenic

1.0

Eigen_PC

Pathogenic

0.98

FATHMM_MKL

Uncertain

0.95

LIST_S2

Uncertain

0.92

MetaRNN

Pathogenic

0.98

MetaSVM

Pathogenic

1.1

MutationAssessor

Uncertain

2.6

PhyloP100

7.5

PrimateAI

Pathogenic

0.82

PROVEAN

Uncertain

-3.8

REVEL

Pathogenic

0.95

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.93

MutPred

0.87

Gain of MoRF binding (P = 0.004)

MVP

0.99

MPC

0.36

ClinPred

0.99

GERP RS

6.1

Varity_R

0.96

gMVP

0.77

Mutation Taster

=20/180

disease causing (ClinVar)

(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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over