View clinical trials related to Adrenal Hyperplasia, Congenital.
Filter by:Classic congenital adrenal hyperplasia (CAH) is a rare genetic endocrine disorder. Its prevalence is around 1/15.000. It results from a deficiency in 21-hydroxylase, an adrenal steroidogenic enzyme involved in the biosynthesis of cortisol and aldosterone. Enzyme deficiency in the steroideogenesis pathway leads to cortisol and aldosterone deficiency of varying severity, and to the accumulation of precursors (17OHP and Progesterone), which are diverted to the production of androgens (Testosterone and D4AD). There are two clinical forms of classical CAH : the salt wasting form and the simple virilizing form, depending on the degree of aldosterone deficiency. The clinical signs are adrenal insufficiency and hyperandrogenism. Hyperandrogenism manifests itself during foetal life, and may be responsible for virilization of the external genitalia of a female foetus, of varying severity. The challenge in managing this condition is to find the right therapeutic balance. Hydrocortisone and fludrocortisone supplementation must be adapted to control adrenal insufficiency, and limit hyperandrogenism. It must be sufficient to avoid episodes of acute adrenal insufficiency, but not excessive to avoid complications secondary to hypercorticism. During childhood, this balance is necessary for growth and pubertal development. However, this balance is difficult to achieve and maintain over time. In adulthood, the fertility of patients is an important issue. This one remains poorly understood. It was only after the introduction of cortisol supplementation in the treatment of CAH in the 1950s that the first pregnancies were described. Since when, due to the rarity of the pathology, the number of pregnancies studied has remained low, and the literature has little hindsight on the subject. This pathology has long been associated with female infertility, due to many factors : biological, mechanical, psychological and sexual, among others. Biological hyperandrogenism may be responsible for chronic dysovulation, and may render the endometrium unsuitable for embryonic implantation. The virilization of the external genitalia and possible complications of pelvic surgery can be an obstacle to sexuality in these patients. They experience sexual difficulties, particularly during penetrative intercourse. The literature also shows that the majority of these patients are single and that their sexual orientation is more likely to be homosexual. Finally, the desire to have children is less prevalent in these patients than in the general population. The first published studies on the fertility of CAH patients showed a lower pregnancy rate than the general population, but did not take into account the patient' desire to become pregnant. In 2009, Casteras et al demonstrated for the first time in a cohort of CAH patients that fecundity is preserved in patients with a desire to become pregnant. It should be noted that the fertility of patients with CAH may evolve in the coming years in France thanks to the new bioethics law voted in 2021, which now allows unmarried patients and patients in homosexual couples to have access to male gamete donation. In addition, very little is known about the course of pregnancies in patients with CAH. Few pregnancies have been studied to date. Hormonal balance during pregnancy if difficult to monitor, given the absence of reliable biological makers during this period. In this context, it is complicated to know the impact of the pathology and its balance on the course of the pregnancy. The latest articles published on the subject of pregnancy complications are contradictory. Some find an increased risk of gestational diabetes. Others find a higher risk of maternal-fetal infection, low weight for gestational age, or congenital malformations than in general population. The increased risk of miscarriage is debated. On the other hand, articles are unanimous on the most frequent mode of delivery in this population : in the vast majority of cases, patients give birth by ceasarian section, due to their history of pelvic surgery. It is in context that we wish through this study to make a point of fertility and pregnancy in patients with classical CAH.
This study was a single-center randomized controlled trial which lasted 14 days and consisted of two stages (run-in period (stage I) and intervention period (stage II) each contain 7 days without potassium supplement. If participants meet the enrollment criteria at the end of stage I, they were assigned to the low sodium group (50mmol/d) or normal sodium group (100mmol/d), and then continued to finish stage II. The primary outcome was the change in serum potassium after exposure to normal sodium / low sodium diet and the secondary outcome was the assessment of BP change following a normal sodium / low sodium diet. Patients were given nifedipine controlled-release tablets 30 mg/d to lower blood pressure and were not provided any potassium supplements during the two stages. If the subject has an increase in BP (>180/110 mmHg), the dose of nifedipine controlled-release tablets will be increased to 60 mg/d. Patients will be withdrawn from the study if they cannot tolerate the diet or their serum potassium were below 2.8 mmol/L.
This study is a randomized, double-blind, active-controlled, phase III study of Chronocort® compared with immediate-release hydrocortisone replacement therapy in participants aged 16 years and over with Congenital Adrenal Hyperplasia.
Adrenal vein sampling (AVS) is currently considered the gold standard for subtype diagnosis of primary aldosteronism (PA). However, the percentage of unsuitable procedures due to the unsuccessful cannulation of one of the two adrenal veins is still considerable, and there is no general consensus on the criteria that should be used for the interpretation of the results of an AVS study in these specific cases.
Primary aldosteronism is a common cause of hypertension. Recent evidence suggests that many patients with bilateral idiopathic hyperaldosteronism harbor gain-of-function somatic mutations in zona glomerulosa calcium channels that results in aldosterone production. This finding raises the possibility that calcium channel antagonists may be a targeted therapy to reduce aldosterone production in patients who harbor these mutations.
With our retrospective study the investigators show the limitations of the posterior retroperitoneal adrenalectomy by analyzing anatomical parameters. The investigators compared the data from one patient who underwent a conversion with 13 patients without a conversion. Furthermore, they explored the influence of these parameters on the operation time and excluded the patient who had a conversion from this analysis. The investigators hypothesize that by determining anatomical characteristics on cross-sectional imaging (CT or MRI), they can show the limitations of the posterior retroperitoneal adrenalectomy to prevent patients from being converted to lateral transperitoneal adrenalectomy.
This is a Phase 2, open-label, multiple-dose, dose-escalation study to assess the safety, tolerability, pharmacokinetics (PK), and pharmacodynamics (PD) of NBI-74788 in approximately 12 pediatric female and male subjects (14 to 17 years of age) with a documented medical diagnosis of classic 21-hydroxylase deficiency congenital adrenal hyperplasia (CAH).
This is an open-label, non-randomized crossover design feasibility trial comparing oral hydrocortisone treatment with interval bolus delivery (pulsatile) of subcutaneous hydrocortisone via infusion pump in children with congenital adrenal hyperplasia. Eight children, ages 4-18 yrs, will have 24-hr pharmacokinetic and pharmacodynamic profiles of cortisol, 17-hydroxyprogesterone and androstenedione concentrations while on oral hydrocortisone therapy (admission 1), during an initial trial of the subcutaneous hydrocortisone pump (admission 2), and after 6 weeks of subcutaneous hydrocortisone pump treatment (admission 3). An integrated pharmacokinetic and pharmacodynamic model will be used to determine cortisol, 17-hydroxyprogesterone and androstenedione parameters to compare the duration of time subjects have these concentrations outside acceptable ranges. Funding Source - FDA OOPD
This is a Phase 2 study of SPR001 for the treatment of classic CAH that will provide 12 weeks of open-label treatment to eligible subjects.
This research uses the Liquid Chromatography coupled to tandem Mass Spectrometry (LC-MS / MS) technique on dried blot spot samples for the neonatal screening of congenital adrenal hyperplasia. The main objective of this study is to demonstrate that this technique allow dosage of adrenal steroids on dried blot spot samples as efficiently and with the same sensitivity than the current technic on a cohort of 132 newborns aged 2 to 5 days, with a gestational age greater than or equal to 30 weeks of amenorrhea.