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Relative Risks of Contributing Factors to Morbidity and Mortality in Adults With Craniopharyngioma on Growth Hormone Replacement

Context
In adults, craniopharyngioma (CP) of either childhood-onset (CO-CP) or adult-onset (AO-CP) is associated with increased morbidity and mortality, but data on the relative risks (RRs) of contributing factors are lacking.


Objective
To assess the RRs of factors contributing to morbidity and mortality in adults with CO-CP and AO-CP.


Methods
Data on 1669 patients with CP from KIMS (Pfizer International Metabolic Database) were analyzed using univariate and multiple Poisson and Cox regression methods.


Results
When CO-CP and AO-CP groups were combined, history of stroke and hyperlipidemia increased cardiovascular risk, higher body mass index (BMI) and radiotherapy increased cerebrovascular risk, and increased waist circumference increased the risk of developing diabetes mellitus (DM). Compared with patients with CO-CP, patients with AO-CP had a threefold higher risk of tumor recurrence, whereas being female and previous radiotherapy exposure conferred lower risks. Radiotherapy and older age with every 10 years from disease onset conferred a 2.3- to 3.5-fold risk for developing new intracranial tumors, whereas older age, greater and/or increasing BMI, history of stroke, and lower insulinlike growth factor I (IGF-I) standard deviation score measured at last sampling before death were related to increased all-cause mortality. Compared with the general population, adults with CP had 9.3-, 8.1-, and 2.2-fold risks of developing DM, new intracranial tumors, and early death, respectively.


Conclusion
Conventional factors that increase the risks of cardio- and cerebrovascular diseases and DM and risks for developing new intracranial tumors contributed to excess morbidity and mortality. In addition, lower serum IGF-I level measured from the last sample before death was inversely associated with mortality risk in patients with CP.