Effect of long-term GH replacement therapy on cardiovascular outcomes in GH-deficient patients previously treated for acromegaly: a sub-analysis from the Dutch National Registry of Growth Hormone Treatment in Adults

CC van Bunderen, NC van Varsseveld, MW Heymans, AAM Franken, HPF Koppeschaar, AJ (Aart-Jan) van der Lely, ML Drent

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Objective: The effect of GH deficiency (GHD) on the metabolic profile of acromegaly patients is unclear in patients previously treated for acromegaly, as are the efficacy and safety of GH treatment in this particular group. The aim of the study is to describe the characteristics of patients with severe GHD who were previously treated for acromegaly, and to investigate the effects of long-term GH treatment on cardiovascular risk factors and morbidity, compared with patients who were treated for a nonfunctioning pituitary adenoma (NFPA). Design: A nationwide surveillance study. Methods: Sixty-five patients from the Dutch National Registry of Growth Hormone Treatment in Adults with previous acromegaly were compared with 778 patients with previous NFPA. Cardiovascular indices, including body composition, lipid profile, glucose metabolism, blood pressure, and morbidity were investigated. Results: GHD patients with previous acromegaly had an unfavorable metabolic profile comparable with or more than GHD patients with previous NFPA. GH treatment led to improvement of the lipid profile in both groups, also after excluding patients using lipid-lowering medication. In patients with previous acromegaly, HbA1c levels increased more than in patients with previous NFPA (estimate 0.03, 95% CI 0.002-0.06, P=0.04). The risk for developing cardiovascular diseases was not different between the groups. Conclusions: The patients with GHD after previous acromegaly have an unfavorable metabolic profile comparable with patients with GHD after previous NFPA. In both groups, the lipid profile improves during GH treatment. Changes in glucose metabolism should be monitored closely. GH treatment in patients with GHD previously treated for acromegaly had no deleterious effect on cardiovascular morbidity.
Original languageUndefined/Unknown
Pages (from-to)717-726
Number of pages10
JournalEuropean Journal of Endocrinology
Issue number6
Publication statusPublished - 2014

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