Sexual Maturation in β-Thalassemia Major Patients in Assiut University Hospital

NCT ID: NCT03847558

Last Updated: 2019-02-20

Basic Information

• Recruitment Status: UNKNOWN
• Total Enrollment: 100 participants
• Study Classification: OBSERVATIONAL
• Study Start Date: 2019-04-15
• Study Completion Date: 2020-04-15

Brief Summary

cross sectional study to asses sexual maturation in β-Thalassemia Major patients receiving Iron Chelation Therapy in assuit University Hospital and maintenance of 2ry sexual characters and reproduction

Detailed Description

Thalassemia refers to a group of inherited diseases characterized by decreased or absent synthesis of normal globin chains . The direct consequence is an imbalance of the alpha and beta globin chain synthesis that results in anemia from ineffective erythropoiesis and hemolysis.

The term thalassemia major refers to the severe form that is often associated with life-long transfusion dependent anemia.

Hypogonadism is the most frequently reported endocrine complication, affecting 70-80% of thalassemia major patients. Hypogonadism is likely to be caused by iron deposits in the gonads, pituitary gland or both.

Hypogonadotropic hypogonadism resulting from iron deposition in the pituitary gonadotrope is more commonly found than gonadal iron deposition in ovaries or testes occurs.

Iron deposition in the anterior pituitary gland can be demonstrated beginning in the first decade of life, but clinical manifestations are usually not evident until the onset of puberty. At the earlier stage, only a diminished gonadotropin reserve with intact gonadotropin pulse was observed .

The direct effect of iron, in particular that of NTBI(non-transferrin-bound iron) on the ovaries and testes is currently unknown. The ovarian reserve is preserved in the majority of female thalassemia patients, even in women with amenorrhea. In males, histological examination of testicular tissues from autopsies demonstrated testicular interstitial fibrosis with small, heavily pigmented, undifferentiated seminiferous tubules and an absence of Leydig cells .

There are three main clinical presentations of the HPG(hypothalamic pituitary gonadal axis)axis derangement in thalassemia major, including delayed puberty, arrested puberty and hypogonadism. Delayed puberty is defined as the absence of any pubertal signs by 14 years in boys and 13 years in girls . Arrested puberty is defined as the absence of further pubertal progression for more than 1 year after puberty has started.

Chelation therapy with desferoxamine before the age of puberty has helped patients to attain normal sexual maturation in some studies but not in others. In a study of 40 patients with transfusion-dependent thalassemia major, 90% of 19 patients who began treatment with desferoxamine before the age of 10 had normal sexual development compared with only 38% of those treated after the age of 10. In contrast, another study reported no difference in the frequency of pubertal maturation when iron chelation therapy was started at the age of 10 or earlier. Serum ferritin levels were still higher than normal in previous studies.

After a period of 5-7 years, 50% of hypogonadal males achieved normal testosterone levels and 32% of amenorrheic women became pregnant, either spontaneously or using in vitro fertilization . With modern medications, iron-induced hypogonadism may be reversible with intensive iron chelation regimens.

Conditions

β-Thalassemia Major Patients Receiving Chelation Therapy

Study Design

• Observational Model Type: CASE_CONTROL
• Study Time Perspective: CROSS_SECTIONAL

Study Groups

sexual maturation in patient receiving iron chelation

assess of sexual maturation by clinical examination and hormonal studies (FSH.LH,Testosterone)

FSH((Follicle Stimulating Hormone) and LH (Luteinizing Hormone) hormone for females and Testosterone hormone for males

Intervention Type: DIAGNOSTIC_TEST

assess of sexual maturation by clinical examination and hormonal studies (FSH.LH,Testosterone)

Interventions

FSH((Follicle Stimulating Hormone) and LH (Luteinizing Hormone) hormone for females and Testosterone hormone for males

assess of sexual maturation by clinical examination and hormonal studies (FSH.LH,Testosterone)

Intervention Type: DIAGNOSTIC_TEST

Eligibility Criteria

Inclusion Criteria

• β-thalassemic Patients aged 10 years and older
• β-thalassemic patients receiving regular blood transfusions
• All patients are on chelation therapy

Exclusion Criteria

• β-thalassemic patients with major system complications as cardiac ,renal or hepatic.
• Patients not receiving chelation therapy
• Patients with other hemolytic anemia

• Minimum Eligible Age: 10 Years
• Maximum Eligible Age: 16 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Assiut University

OTHER

Sponsor Role: lead

Responsible Party

ayman ekram

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Other Identifiers

Assiut Univ Children Hospitals

Identifier Type: -

Identifier Source: org_study_id