19-49016282-G-A

Position:

• chr19-49016282-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_000894.3(LHB):​c.212C>T​(p.Pro71Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: LHB NM_000894.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.43

Genes affected

LHB (HGNC:6584): (luteinizing hormone subunit beta) This gene is a member of the glycoprotein hormone beta chain family and encodes the beta subunit of luteinizing hormone (LH). Glycoprotein hormones are heterodimers consisting of a common alpha subunit and an unique beta subunit which confers biological specificity. LH is expressed in the pituitary gland and promotes spermatogenesis and ovulation by stimulating the testes and ovaries to synthesize steroids. The genes for the beta chains of chorionic gonadotropin and for luteinizing hormone are contiguous on chromosome 19q13.3. Mutations in this gene are associated with hypogonadism which is characterized by infertility and pseudohermaphroditism. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LHB	NM_000894.3	c.212C>T	p.Pro71Leu	missense_variant	3/3	ENST00000649238.3	NP_000885.1
LHB	XM_047438832.1	c.260C>T	p.Pro87Leu	missense_variant	2/2		XP_047294788.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LHB	ENST00000649238.3	c.212C>T	p.Pro71Leu	missense_variant	3/3		NM_000894.3	ENSP00000497294	P1
LHB	ENST00000649284.1	n.303C>T		non_coding_transcript_exon_variant	2/2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 64

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 24, 2024

The c.212C>T (p.P71L) alteration is located in exon 3 (coding exon 3) of the LHB gene. This alteration results from a C to T substitution at nucleotide position 212, causing the proline (P) at amino acid position 71 to be replaced by a leucine (L). 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	Benign	0.18
BayesDel_addAF	Benign	-0.016	T
BayesDel_noAF	Benign	-0.26
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.79	D;D
Eigen	Uncertain	0.23
Eigen_PC	Benign	0.085
FATHMM_MKL	Benign	0.57	D
LIST_S2	Uncertain	0.95	.;D
M_CAP	Uncertain	0.096	D
MetaRNN	Uncertain	0.45	T;T
MetaSVM	Benign	-0.68	T
MutationAssessor	Uncertain	2.4	M;M
MutationTaster	Benign	1.0	N
PrimateAI	Uncertain	0.53	T
PROVEAN	Uncertain	-3.0	D;.
REVEL	Benign	0.25
Sift	Uncertain	0.0060	D;.
Sift4G	Uncertain	0.056	T;.
Polyphen		0.93	P;P
Vest4		0.43
MutPred		0.43		Gain of stability (P = 0.0068);Gain of stability (P = 0.0068);
MVP		0.78
MPC		0.34
ClinPred		0.88	D
GERP RS		4.7
Varity_R		0.20
gMVP		0.36

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-49519539;