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The Characteristics of Quality of Life Impairment in Adult Growth Hormone (GH)-Deficient Survivors of Cancer and Their Response to GH Replacement Therapy

Department of Endocrinology, Christie Hospital, Manchester M20 4BX, United Kingdom

Address all correspondence and requests for reprints to: Dr. S. M. Shalet, Department of Endocrinology, Christie Hospital, Wilmslow Road, Manchester M20 4BX, United Kingdom. E-mail: stephen.m.shalet{at}man.ac.uk.

We studied 50 (27 women and 23 men) GH-deficient (GHD) cancer survivors and 47 (24 women and 23 men) GHD patients with pituitary pathologies. All GHD patients were considered for GH replacement on the basis of subjectively poor quality of life (QOL). Primary outcome measures were scores of QOL instruments psychological general well-being schedule (PGWB) and assessment of GH deficiency in adults (AGHDA) at baseline and early (6–13 months) and long-term (24–77 months) treatment follow-up. Of secondary interest were six PGWB domains. Linear mixed effect regression was used to model each QOL outcome. The groups differed with respect to three covariates: age, gender, and body mass index. These variables were included in all fitted models. Baseline scores for PGWB and AGHDA were not different between groups. Ranking of PGWB domains were similar between groups at baseline (lowest domain, vitality). The pattern of change in mean scores for all outcome measures from baseline did not differ between groups (P = 0.86). All QOL variables improved significantly with treatment [estimated mean change ± SE: PGWB, 16.2 ± 1.7; AGHDA, –6.2 ± 0.6; PGWB domains (transformed percentage scales): anxiety, 12.4 ± 1.7; depression, 14.1 ± 2.1; health, 12.4 ± 1.7; self-control, 11.3 ± 2.0; well-being, 15.2 ± 1.7; vitality, 22.5 ± 2.0 (vitality, greatest change)]. There was no evidence of group difference in early follow-up or long-term follow-up means for any outcome variable. The QOL in adult GHD cancer survivors was comparable to that in GHD adults with pituitary pathologies and improved with GH replacement in a similar manner. We conclude that QOL impairment in adult GHD cancer survivors appears mainly related to GHD rather than cancer diagnosis and treatment.

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