1-154429236-C-T

Variant names:

• chr1-154429236-C-T
• rs34099703
• NM_000565.4:c.126C>T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_Strong BP6_Very_Strong BP7 BS1 BS2

The NM_001382774.1(IL6R):​c.126C>T​(p.Ser42Ser) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0017 in 1,613,898 control chromosomes in the GnomAD database, including 33 homozygotes. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0092 (21 hom., cov: 32)
  • Exomes 𝑓: 0.00091 (12 hom.)
• Consequence: IL6R NM_001382774.1 splice_region, synonymous
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -4.62

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 Benign. Variant got -21 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.78).
• BP6: Variant 1-154429236-C-T is Benign according to our data. Variant chr1-154429236-C-T is described in ClinVar as [Benign]. Clinvar id is 715552.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-4.61 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00924 (1406/152230) while in subpopulation AFR AF= 0.0321 (1332/41536). AF 95% confidence interval is 0.0306. There are 21 homozygotes in gnomad4. There are 676 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 21 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IL6R	NM_000565.4	c.126C>T	p.Ser42Ser	synonymous_variant	Exon 2 of 10	ENST00000368485.8	NP_000556.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
IL6R	ENST00000368485.8	c.126C>T	p.Ser42Ser	synonymous_variant	Exon 2 of 10	1	NM_000565.4	ENSP00000357470.3

Frequencies

GnomAD3 genomes AF: 0.00921 AC: 1401 AN: 152112 Hom.: 21 Cov.: 32

Gnomad AFR AF: 0.0320

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00354

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00767

GnomAD3 exomes AF: 0.00251 AC: 631 AN: 251384 Hom.: 9 AF XY: 0.00176 AC XY: 239 AN XY: 135860

Gnomad AFR exome AF: 0.0340

Gnomad AMR exome AF: 0.00156

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000544

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000440

Gnomad OTH exome AF: 0.00147

GnomAD4 exome AF: 0.000912 AC: 1333 AN: 1461668 Hom.: 12 Cov.: 33 AF XY: 0.000772 AC XY: 561 AN XY: 727092

Gnomad4 AFR exome AF: 0.0318

Gnomad4 AMR exome AF: 0.00165

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000453

Gnomad4 SAS exome AF: 0.0000580

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000315

Gnomad4 OTH exome AF: 0.00214

GnomAD4 genome AF: 0.00924 AC: 1406 AN: 152230 Hom.: 21 Cov.: 32 AF XY: 0.00908 AC XY: 676 AN XY: 74432

Gnomad4 AFR AF: 0.0321

Gnomad4 AMR AF: 0.00353

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.000415

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000147

Gnomad4 OTH AF: 0.00759

Alfa AF: 0.00413 Hom.: 8

Bravo AF: 0.0105

Asia WGS AF: 0.00115 AC: 4 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

IL6R-related disorder Benign:1

Apr 16, 2024

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.78
CADD	Benign	0.21
DANN	Benign	0.56
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.6

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs34099703; hg19: chr1-154401712;