chr2-202555436-C-G

Variant names:

• chr2-202555436-C-G
• rs777458559
• NM_001204.7:c.1771C>G

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PM5 PP3

The NM_001204.7(BMPR2):​c.1771C>G​(p.Arg591Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R591Q) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BMPR2 NM_001204.7 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.80
• Publications: 3 publications found

Genes affected

BMPR2 (HGNC:1078): (bone morphogenetic protein receptor type 2) This gene encodes a member of the bone morphogenetic protein (BMP) receptor family of transmembrane serine/threonine kinases. The ligands of this receptor are members of the TGF-beta superfamily. BMPs are involved in endochondral bone formation and embryogenesis. These proteins transduce their signals through the formation of heteromeric complexes of two different types of serine (threonine) kinase receptors: type I receptors of about 50-55 kD and type II receptors of about 70-80 kD. Mutations in this gene have been associated with primary pulmonary hypertension, both familial and fenfluramine-associated, and with pulmonary venoocclusive disease. [provided by RefSeq, May 2020]

BMPR2 Gene-Disease associations (from GenCC):

• pulmonary arterial hypertension

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• pulmonary hypertension, primary, 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Laboratory for Molecular Medicine, Labcorp Genetics (formerly Invitae)
• heritable pulmonary arterial hypertension

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• congenital heart disease

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr2-202555437-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 812834.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.838

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BMPR2	NM_001204.7	c.1771C>G	p.Arg591Gly	missense_variant	Exon 12 of 13	ENST00000374580.10	NP_001195.2
BMPR2	XM_011511687.2	c.1771C>G	p.Arg591Gly	missense_variant	Exon 12 of 13		XP_011509989.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BMPR2	ENST00000374580.10	c.1771C>G	p.Arg591Gly	missense_variant	Exon 12 of 13	1	NM_001204.7	ENSP00000363708.4
BMPR2	ENST00000374574.2	c.1586+2548C>G		intron_variant	Intron 11 of 11	2		ENSP00000363702.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.88
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.17
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.46	T
Eigen	Uncertain	0.56
Eigen_PC	Uncertain	0.60
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.097	D
MetaRNN	Pathogenic	0.84	D
MetaSVM	Uncertain	0.24	D
MutationAssessor	Benign	1.7	L
PhyloP100		2.8
PrimateAI	Uncertain	0.71	T
PROVEAN	Benign	-1.6	N
REVEL	Uncertain	0.53
Sift	Uncertain	0.0030	D
Sift4G	Benign	0.12	T
Polyphen		1.0	D
Vest4		0.91
MutPred		0.42		Loss of MoRF binding (P = 0.0466);
MVP		0.91
MPC		1.2
ClinPred		0.92	D
GERP RS		5.7
Varity_R		0.34
gMVP		0.55
Mutation Taster		=63/37	polymorphism

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

Other links and lift over

dbSNP: rs777458559; hg19: chr2-203420159;