1-154429253-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_000565.4(IL6R):c.143C>A(p.Pro48Gln) 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 benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P48L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: IL6R NM_000565.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.373

Genes affected

IL6R (HGNC:6019): (interleukin 6 receptor) This gene encodes a subunit of the interleukin 6 (IL6) receptor complex. Interleukin 6 is a potent pleiotropic cytokine that regulates cell growth and differentiation and plays an important role in the immune response. The IL6 receptor is a protein complex consisting of this protein and interleukin 6 signal transducer (IL6ST/GP130/IL6-beta), a receptor subunit also shared by many other cytokines. Dysregulated production of IL6 and this receptor are implicated in the pathogenesis of many diseases, such as multiple myeloma, autoimmune diseases and prostate cancer. Alternatively spliced transcript variants encoding distinct isoforms have been identified in this gene. A pseudogene of this gene is found on chromosome 9. [provided by RefSeq, Aug 2020]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.36835945).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
IL6R	NM_000565.4	c.143C>A	p.Pro48Gln	missense_variant	2/10	ENST00000368485.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
IL6R	ENST00000368485.8	c.143C>A	p.Pro48Gln	missense_variant	2/10	1	NM_000565.4	P1
IL6R	ENST00000344086.8	c.143C>A	p.Pro48Gln	missense_variant	2/9	1
IL6R	ENST00000622330.5	c.143C>A	p.Pro48Gln	missense_variant	2/7	1
IL6R	ENST00000512471.1	c.143C>A	p.Pro48Gln	missense_variant	2/4	4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

May 30, 2022

This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with glutamine, which is neutral and polar, at codon 48 of the IL6R protein (p.Pro48Gln). This variant has not been reported in the literature in individuals affected with IL6R-related conditions. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. 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 (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.22
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
Cadd	Benign	20
Dann	Benign	0.97
Eigen	Benign	-0.29
Eigen_PC	Benign	-0.37
FATHMM_MKL	Benign	0.36	N
LIST_S2	Benign	0.81	T;T;T;T
M_CAP	Benign	0.014	T
MetaRNN	Benign	0.37	T;T;T;T
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	0.76	N;N
PrimateAI	Benign	0.33	T
Sift4G	Benign	0.062	T;T;T;D
Polyphen		1.0, 1.0	.;D;D;.
Vest4		0.25
MutPred		0.62		Loss of glycosylation at T46 (P = 0.0578);Loss of glycosylation at T46 (P = 0.0578);Loss of glycosylation at T46 (P = 0.0578);Loss of glycosylation at T46 (P = 0.0578);
MVP		0.48
MPC		0.83
ClinPred		0.71	D
GERP RS		2.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0
Varity_R		0.14
gMVP		0.66

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-154401729;