Pituitary & hypothalamus

Temozolomide in aggressive and metastatic pituitary tumors: a Brazilian multicenter real-world cohort study

PituitaryPublished Retrospective cohort study

Authors' conclusion

In this multicenter Brazilian real-world cohort, TMZ provided high radiological and biochemical disease control with an acceptable safety profile

Study context

Population
Patients with aggressive/metastatic pituitary adenomas treated with temozolomide (TMZ) and followed ≥6 months, Brazilian reference centers; mean age 29.5 years, 53% female; all macroadenomas, 56% giant (>4 cm); 21 functioning, 4 metastatic; Ki-67 >3% in 73%; mean time from diagnosis to TMZ 102 months
Participants
30 patients
Outcome
Radiological disease control rate (partial response or stable disease; RECIST 1.1)
Methodological detailsmulticenter, real-world
  • Multicenter
  • Real-world

Main finding

As reported in the abstract

TMZ

93.3%

Observational data: associations, not effects.

Further findings

Biochemical disease control rate, functioning tumors

Biochemical disease control rate among functioning tumors
81.2%

Objective biochemical response rate (complete + partial response), functioning tumors

Objective biochemical response rate (complete + partial response) among functioning tumors
68.8%

Safety

Adverse events, most commonly nausea and myelotoxicity
66% of patients

Original publication

Temozolomide in aggressive and metastatic pituitary tumors: a Brazilian multicenter real-world cohort study. Pituitary. Published 27 March 2026. doi:10.1007/s11102-026-01663-z

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