chr9-136196534-C-T

Position:

• chr9-136196534-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 2P and 10B. PM2 BP4_Strong BP6_Moderate BS1

The NM_178138.6(LHX3):​c.*791G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0016 in 152,360 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 Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0016 (1 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: LHX3 NM_178138.6 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.09

Genes affected

LHX3 (HGNC:6595): (LIM homeobox 3) This gene encodes a member of a large family of proteins which carry the LIM domain, a unique cysteine-rich zinc-binding domain. The encoded protein is a transcription factor that is required for pituitary development and motor neuron specification. Mutations in this gene cause combined pituitary hormone deficiency 3. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BP6: Variant 9-136196534-C-T is Benign according to our data. Variant chr9-136196534-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 365800.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population eas. gnomad4 allele frequency = 0.0016 (244/152360) while in subpopulation EAS AF= 0.0249 (129/5188). AF 95% confidence interval is 0.0214. There are 1 homozygotes in gnomad4. There are 143 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LHX3	NM_178138.6	c.*791G>A		3_prime_UTR_variant	6/6	ENST00000371748.10
LHX3	NM_001363746.1	c.*791G>A		3_prime_UTR_variant	6/6
LHX3	NM_014564.5	c.*791G>A		3_prime_UTR_variant	6/6
LHX3	XM_017015168.1	c.*791G>A		3_prime_UTR_variant	6/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LHX3	ENST00000371748.10	c.*791G>A		3_prime_UTR_variant	6/6	1	NM_178138.6
LHX3	ENST00000371746.9	c.*791G>A		3_prime_UTR_variant	6/6	1		P1
LHX3	ENST00000619587.1	c.*791G>A		3_prime_UTR_variant	6/6	1
LHX3	ENST00000645419.1	n.2810G>A		non_coding_transcript_exon_variant	5/5

Frequencies

GnomAD3 genomes AF: 0.00162 AC: 247 AN: 152242 Hom.: 1 Cov.: 33

Gnomad AFR AF: 0.000627

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000262

Gnomad ASJ AF: 0.000865

Gnomad EAS AF: 0.0250

Gnomad SAS AF: 0.0155

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000118

Gnomad OTH AF: 0.000478

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 564 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 360

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.00160 AC: 244 AN: 152360 Hom.: 1 Cov.: 33 AF XY: 0.00192 AC XY: 143 AN XY: 74502

Gnomad4 AFR AF: 0.000625

Gnomad4 AMR AF: 0.000261

Gnomad4 ASJ AF: 0.000865

Gnomad4 EAS AF: 0.0249

Gnomad4 SAS AF: 0.0151

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000118

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000208 Hom.: 0

Bravo AF: 0.00137

Asia WGS AF: 0.0120 AC: 41 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Non-acquired combined pituitary hormone deficiency with spine abnormalities Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 12, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	1.5
DANN	Benign	0.60

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

LitVar

Other links and lift over

dbSNP: rs12237402; hg19: chr9-139088380;