Pituitary & hypothalamus

A long‐term prognosis study of human USP8‐mutated adrenocorticotropin hormone (ACTH)‐secreting pituitary neuroendocrine tumours

Clin Endocrinol (Oxf)Published Retrospective cohort study

Authors' conclusion

Somatic USP8 variants accounted for 50% of the genetic causes in this cohort with a significant female frequency. A long-term follow-up revealed a tendency toward shorter recurrence-free survival in USP8-mutant patients.

Study context

Population
Patients with pituitary corticotroph tumours (Cushing disease) operated November 2013 to January 2015, single centre
Participants
48 patients
Exposure
USP8-mutated vs USP8 wild-type corticotroph tumours
  • USP8 variantsn = 24
Outcome
Prevalence of USP8 variants
Methodological detailssingle-centre
  • Single-centre

Main finding

As reported in the abstract

Seven USP8 variants identified; patients with USP8 variants

24

50%

Observational data: associations, not effects.

Further findings

Female sex

P = 0.022

Recurrence · median 62 months follow-up

Recurrence-free survival · tendency to be shorter in USP8-mutated

P = 0.068

Age at surgery, p.Ser719del vs p.Pro720Arg

Older age at surgery with p.Ser719del vs p.Pro720Arg (47 vs 24 years)
P = 0.033

Macroadenoma, p.Pro720Arg vs p.Ser718Pro

Higher macroadenoma rate with p.Pro720Arg vs p.Ser718Pro (60% vs 0%)
P = 0.037

Serum and urinary cortisol and ACTH levels

No significant differences

Immediate surgical remission

Not significantly different between the two groups (79% vs 75%)
  • Group order of values not stated

Long-term hormone remission

Not significantly different between the two groups (79% vs 67%)
  • Group order of values not stated

Original publication

A long‐term prognosis study of human USP8‐mutated ACTH‐secreting pituitary neuroendocrine tumours. Clin Endocrinol (Oxf). Published 1 May 2024. doi:10.1111/cen.15065

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