Is STAT5B p.Gln337Ter (c.1009C>T) pathogenic?

STAT5B p.Gln337Ter (c.1009C>T) is classified Pathogenic in STAT5B (ClinVar, Single submitter, 1 submitter; last evaluated 2021-05-27). Absent from gnomAD v4.1; Associated with growth hormone insensitivity with immune dysregulation 1, autosomal recessive.

What condition is associated with STAT5B p.Gln337Ter (c.1009C>T)?

STAT5B p.Gln337Ter (c.1009C>T) is associated with growth hormone insensitivity with immune dysregulation 1, autosomal recessive (ClinVar).

How common is STAT5B p.Gln337Ter (c.1009C>T) in the general population?

STAT5B p.Gln337Ter (c.1009C>T) is absent from gnomAD v4.1 (gnomAD).

How is Laron syndrome with immunodeficiency inherited?

Typically Autosomal dominant, Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

STAT5B p.Gln337Ter

c.1009C>T · rs2080191165 · VCV1453821

Pathogenic Single submitter

Classification

Pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

Consequence

nonsense (stop-gain)

predicted LoF

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

growth hormone insensitivity with immune dysregulation 1, autosomal recessive

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	nonsense (stop-gain)	predicted loss-of-function in a LoF-intolerant gene
NMD	predicted	premature termination codon in exon 9 of 19
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 2.1, phastCons 1
Overall
CADD	41.0	PHRED · no single calibrated threshold — expert panels disagree

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: STAT5B
Protein: p.Gln337Ter
Coding: c.1009C>T
MANE Select: NM_012448
dbSNP: rs2080191165
Type: single nucleotide variant
Location: chr17:42218311 (GRCh38)
Gene constraint: LOEUF 0.277 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 85.90 · 2 PDB
Residue 337: an α-helix

Full STAT5B gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

growth hormone insensitivity with immune dysregulation 1, autosomal recessive — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Laron syndrome with immunodeficiency (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive
Onset: Childhood, Infancy, Neonatal

Similar variants

STAT5B p.Gln337Lys Uncertain significance ★★ ⚠ same residue
STAT5B c.1906+1G>A Likely pathogenic ★★ same condition
STAT5B p.Ala20Glu Uncertain significance ★★ ⚠ same condition
STAT5B p.Ala20Val Uncertain significance ★★ ⚠ same condition
STAT5B p.Ala213Gly Uncertain significance ★★ ⚠ same condition
STAT5B p.Ala213Ser Uncertain significance ★★ ⚠ same condition
STAT5B p.Ala723Thr Uncertain significance ★★ ⚠ same condition
STAT5B p.Ala785Thr Uncertain significance ★★ ⚠ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/stat5b-p-gln337ter (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown