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Growth Hormone Deficiency clinical trials

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NCT ID: NCT00212758 Completed - Clinical trials for Kidney Failure, Chronic

A Study to Optimize Growth Hormone Dosing in Children With Chronic Kidney Disease by Measuring IGF-1 Levels in Blood

Start date: January 2005
Phase: Phase 4
Study type: Interventional

Treatment with growth hormone (GH; a hormone made by the body that stimulates growth) has been shown to be helpful in treating children with chronic kidney disease who fail to grow. The amount of growth that is seen in children treated with growth hormone varies widely for unknown reasons. Growth hormone works by producing another hormone in the liver called insulin-like growth factor-1, or IGF-1 for short. IGF-1 stimulates the bones to grow. The amount of IGF-1 in the blood may directly affect the amount of growth in each child. At this time, growth hormone therapy in children depends on giving a certain dose of growth hormone for each child based on his or her weight. If after 3-6 months on this dose of growth hormone the change in height is not enough, then the dose of growth hormone is increased until enough growth is seen. This method of dosing of growth hormone may take a long time and is complicated and time-consuming. The purpose of this study is to measure the amount of IGF-1 produced by the body as a result of giving 2 different doses of growth hormone in children for 7 days only. The study investigator hopes to find the most favorable level of IGF-1 generated after 7 days of growth hormone that correlates with good growth of children with kidney disease. Then instead of dosing growth hormone by weight, like is done now, researchers can dose growth hormone by the amount of IGF-1 that the body produces. Being able to dose more effectively will save valuable time for the child to grow and will shorten the overall duration of growth hormone therapy. The investigators will also determine the effect of inflammatory cytokines Il-6 and TNF-alpha on growth hormone insensitivity and hence IGF-1 generation test in the same population.

NCT ID: NCT00191165 Completed - Clinical trials for Growth Hormone Deficiency

Efficacy and Safety of a High Dosage Compared to the Label Dosage of Somatropin in Early Pubertal Stage Children With Growth Hormone Deficiency

Start date: March 2004
Phase: Phase 3
Study type: Interventional

Multi-center, randomized, controlled, open-label, phase III study comparing the effects of two different dosages of somatropin treatment (in-label or doubled) after 12 and 24 months of treatment, on height velocity in early pubertal children with growth hormone deficiency (GHD). The study will be conducted in Italy. Approximately 26 subjects will participate in this study, distributed as 13 in the in-label dosage group (group A) and 13 in the doubled dosage group (group B).

NCT ID: NCT00182091 Completed - Acromegaly Clinical Trials

Effects of Growth Hormone Administration on Cardiovascular Risk in Cured Acromegalics With Growth Hormone Deficiency

Start date: August 2004
Phase: N/A
Study type: Interventional

The purpose of the study is to evaluate the effects of growth hormone (GH) replacement in men and women with a history of acromegaly and who are now growth hormone deficient. We will compare them to persons with a history of acromegaly who have normal GH levels. Acromegaly results when an area in the brain, called the pituitary, produces too much growth hormone. When an individual is cured of acromegaly, the growth hormone levels may be normal or low (that is GH deficiency). Growth hormone deficiency means the body no longer produces as much growth hormone because the pituitary/hypothalamic region was damaged by a tumor or by treatment received. We will study the effects of growth hormone replacement on the health of the heart and blood vessels of GH deficient persons by looking to see if this therapy: 1. has effects on cardiovascular risk markers (special blood tests which indicate how healthy your heart and arteries are) 2. affects the stiffness of the arteries 3. affects your heart rate and the capacity of your heart to respond to changes in body position 4. has different effects depending on whether you are taking estrogen / testosterone. We will assess these measures of health on one occasion in persons with cured acromegaly and normal GH levels and in persons with cured acromegaly who have GH deficiency and a contraindication to receiving GH. GH deficient individuals with no contraindication to receiving GH, will participate in the study for 12 months. Individuals with normal GH levels, or who are GH deficient and have a contraindication to receiving GH, will be asked to return for one more visit (without any interventions).

NCT ID: NCT00174278 Completed - Clinical trials for Growth Hormone Deficiency

Treatment With Recombinant Human Growth Hormone Genotonorm (Registered) In Children With Short Stature Secondary

Start date: February 1997
Phase: Phase 3
Study type: Interventional

To assess the effect of long-term treatment by Genotonorm on linear growth

NCT ID: NCT00163189 Completed - Clinical trials for Growth Hormone Deficiency

Evolution Of Growth Rate In Children With Growth Retardation Due to Glucocorticosteroid Therapy And Treated By Genotonorm

Start date: January 2005
Phase: Phase 3
Study type: Interventional

To estimate the evolution of height and growth rate over 5 years of growth hormone (GH) treatment To estimate the prognostic factors of growth rate with GH treatment To confirm the good clinical and biological safety of GH treatment in such children

NCT ID: NCT00156143 Completed - Clinical trials for Growth Hormone Deficiency

Transition Study: Growth Hormone Therapy In Partial Growth Hormone Deficient Adolescents

TAUBER
Start date: April 2002
Phase: Phase 3
Study type: Interventional

To evaluate in boys and girls the improvement in body composition under GH treatment in adolescents with CO-GHD who remain partially GHD after GH discontinuation.

NCT ID: NCT00149708 Completed - Clinical trials for Growth Hormone Deficiency

Consequence of Lifetime Isolated Growth Hormone Deficiency

Start date: September 2005
Phase: N/A
Study type: Interventional

Growth hormone (GH) deficiency (GHD) in adulthood has been associated with changes in body composition (e.g. increased abdominal obesity, and reduced muscle mass), in organ functions (e.g. reduced cardiac systolic function), in metabolic parameters linked to increased risk of cardiovascular disease (e.g. increased serum total and LDL cholesterol, C reactive protein, and plasma fibrinogen), and with reduced bone density. These observations have been used to define the "adult GHD syndrome" and to advocate GH replacement therapy in GHD adults. However, most of the studies have been performed in patients who have had hypothalamic or pituitary diseases, and/or have undergone brain irradiation. Such patients are often chronically sick, and commonly lack other pituitary hormones, whose replacement therapies may not fully restore the physiological functions of the under-active glands. Reliable data on the existence of the AGHD syndrome and its response to GH therapy can be only obtained by studying patients that are otherwise healthy. However, isolated GH deficiency (IGHD) is a rare disease. In addition, up to 50% of patients who have been diagnosed with IGHD in childhood are no longer GH deficient as adults, making such study difficult to perform due to the scarcity of patients population. We have identified a very large homogeneous population of patients who have IGHD due to a homozygous mutation in the GHRH-receptor (GHRHR) gene that resides in a rural area of Brazil. None of the adult dwarf patients has ever been treated with hGH replacement. This population represents a unique model to study the effect of isolated lifetime lack of GH. We propose studies of physiological and metabolic parameters in subjects who are homozygous for this mutation and compare them with normal subjects residing in the same community. The primary goal of this proposal is to determine the consequences of life-long lack of GH on body composition, muscle strength, cardiovascular status, cardiovascular risk factors, thyroid status and bone density and metabolism, and to test which of these parameters are reversed by a 6-month course of GH replacement therapy. In addition, we want to test the hypothesis that heterozygosity for this GHRHR mutation causes a phenotype that may be intermediate between the one present in homozygous normal subjects and in homozygous affected GHD patients. This is relevant because inactivating mutations in the GHRHR are being described with increasing frequency in populations of different genetic background, suggesting that individuals with faulty single GHRHR alleles may be present in significant numbers in the general population.

NCT ID: NCT00145457 Completed - Clinical trials for Growth Hormone Deficiency

IGF1 Generation Test

CAREL
Start date: April 2001
Phase: Phase 4
Study type: Interventional

To assess the predictive value of the short term IGF-1 stimulation test, based on IGF-1 changes, on the 24 months growth response to 2 different doses of GH in patients with conventional GH deficiency.

NCT ID: NCT00140413 Completed - Clinical trials for Growth Hormone Deficiency

Endocrine Dysfunction and Growth Hormone Deficiency in Children With Optic Nerve Hypoplasia

Start date: December 2004
Phase: Phase 4
Study type: Interventional

Hypotheses: 1. The prevalence of endocrinopathies, and growth hormone (GH) deficiency in particular, among young children diagnosed with optic nerve hypoplasia (ONH) is higher than is commonly thought. 2. Early treatment of children with ONH and GH-deficiency can prevent adverse outcomes. Aims: 1. Determine the prevalence and types of endocrinopathies in children diagnosed with ONH. 2. Correlate endocrine outcome with radiographic, ocular, and developmental findings in children with ONH. 3. Examine the effect of GH treatment on growth and obesity in children with ONH, GH-deficiency, and either subnormal or normal growth compared to children with ONH that are not GH-deficient. 4. Compare growth outcomes between children with isolated GH-deficiency and those with multiple hormone deficiencies.

NCT ID: NCT00136032 Completed - Clinical trials for Growth Hormone Deficiency

Growth Hormone Administration and Its Effects on Cardiovascular Risk Factors in Growth Hormone Deficient Women

Start date: January 2002
Phase: N/A
Study type: Interventional

The purpose of the study is to evaluate the effects of growth hormone replacement on women with growth hormone deficiency. Growth hormone deficiency means the body no longer produces growth hormone due to a tumor or some kind of disease of the brain in an area called the pituitary/hypothalamic region. This is the area of the brain where growth hormone is normally produced. We, the researchers at Massachusetts General Hospital, will establish the effects of growth hormone replacement on cardiovascular parameters (laboratory tests, the flexibility of the arteries, changes in heart rate) in women with growth hormone deficiency. Our goal is to see if this therapy: - has effects on women's cardiovascular risk markers (special blood tests which indicate how healthy the heart and arteries are) - has effects on women's types and levels of various substances circulating in their blood - in women affects the stiffness of their arteries and heart rate variability in parallel with changes in cardiovascular risk markers - has different effects depending on whether women are pre or post menopausal. Participation in this study is expected to last approximately 12 months.