Pituitary & hypothalamus

Importance of clinical profiling to determine excess mortality in prolactinomas: insights from a large, registry-based cohort

PituitaryPublished Retrospective registry-based cohort study

Authors' conclusion

Prolactinoma captured in a population-based tumor registry was associated with excess all-cause mortality, with heterogeneity across patient profiles. An older, male-predominant profile with larger tumors showed excess mortality, whereas a younger, female-predominant profile with small tumors showed directionally lower mortality.

Study context

Population
Adult prolactinoma cases, Surveillance, Epidemiology, and End Results database (2004–2022)
Participants
3,378 cases26,118 person-years
Exposure
Prolactinoma patients vs general population; LOOM vs SAYF profiles
Outcome
All-cause mortality (SMR vs US life tables matched by age, sex, calendar year, race/ethnicity, and geography)
Methodological detailspopulation-based, standardized mortality ratios vs US life tables, unsupervised clustering (Fuzzy C-Means)
  • Population-based
  • Standardized mortality ratios vs US life tables
  • Unsupervised clustering (Fuzzy C-Means)

Main finding

As reported in the abstract

Excess all-cause mortality, all prolactinoma cases

SMR 95% CI 1.03-1.41

1.21

Observational data: associations, not effects.

Further findings

SMR

OutcomeLOOMSAYFEMR (95% CI)P value
All-cause mortality by patient profile (patients with tumor size data)Adjusted for race, calendar year, surgery, and radiotherapy1.36 (95% CI 1.11–1.65)0.48 (95% CI 0.22–0.90)2.92 (1.44–5.90)P = 0.003
  • All-cause mortality by patient profile (patients with tumor size data): 2,481 patients with tumor size (18,097 person-years)

Sensitivity analyses with imputed data

Results consistent; survival advantage in SAYF attenuated and no longer statistically significant

Original publication

Importance of clinical profiling to determine excess mortality in prolactinomas: insights from a large, registry-based cohort. Pituitary. Published 3 September 2026. doi:10.1007/s11102-026-01739-w

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