13 studies found for:    Open Studies | "Klinefelter Syndrome"
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1 Recruiting Study of Psychological and Motor Effects of Testosterone in Adolescents With XXY/Klinefelter Syndrome
Conditions: Klinefelter Syndrome;   XXY Syndrome
Interventions: Drug: Testosterone gel 1%;   Drug: Placebo gel
2 Not yet recruiting Cardiometabolic Profiles of Boys With Klinefelter Syndrome
Conditions: Klinefelter Syndrome;   47,XXY;   Sex Chromosome Aneuploidy;   XXY Syndrome
Intervention: Other: No intervention
3 Recruiting Body Composition in Infants With Klinefelter Syndrome and Effects of Testosterone Treatment
Condition: Klinefelter Syndrome
Intervention: Drug: testosterone cypionate 200mg/ml
4 Recruiting Fertility Preservation in Cases of Klinefelter Syndrome.
Condition: Klinefelter Syndrome
Intervention: Procedure: Seminal analyses and testicular biopsy
5 Recruiting Fertility Assessment in Patients With Klinefelter Syndrome
Condition: Klinefelter Syndrome
Intervention: Other: Counseling
6 Recruiting Thrombosis and Neurocognition in Klinefelter Syndrome
Conditions: Klinefelter Syndrome;   Thrombosis
Intervention:
7 Unknown  Subcapsular Orchiectomy in Men With Klinefelter Syndrome
Condition: Klinefelter Syndrome
Intervention: Procedure: Orchiectomy
8 Recruiting Expanded Noninvasive Genomic Medical Assessment: The Enigma Study
Conditions: Down Syndrome;   Edwards Syndrome;   Patau Syndrome;   Klinefelter Syndrome;   Turner Syndrome;   DiGeorge Syndrome;   Chromosome Deletion;   Aneuploidy
Intervention: Other: Blood sampling for Laboratory Developed Test (LDT) analysis
9 Recruiting The Clinical Study of Sex Chromosome Variants
Conditions: Klinefelter Syndrome;   Male Factor Infertility;   Female Factor Infertility;   Turner Syndrome;   47, XYY;   47, XXX;   47, XXY;   45, X
Intervention:
10 Recruiting Whole Blood Specimen Collection From Pregnant Subjects
Conditions: Down Syndrome;   Edwards Syndrome;   Patau Syndrome;   Klinefelter Syndrome;   Turner Syndrome;   DiGeorge Syndrome;   Perinatal Infections
Intervention: Other: Observational - no intervention
11 Recruiting Elucidating Kisspeptin Physiology by Blocking Kisspeptin Signaling
Conditions: Hypogonadotropic Hypogonadism;   Healthy Postmenopausal Women;   Primary Gonadal Insufficiency in Men;   Hypergonadotropic Hypogonadism in Men;   Klinefelter Syndrome
Interventions: Drug: kisspeptin 112-121;   Drug: GnRH
12 Unknown  Non-Invasive Determination of Fetal Chromosome Abnormalities
Conditions: Down Syndrome (Trisomy 21);   Edward's Syndrome (Trisomy 18);   Patau Syndrome (Trisomy 13);   Klinefelter Syndrome (47, XXY);   and Other Chromosome;   Abnormalities.
Intervention:
13 Recruiting Development of Non-invasive Prenatal Test for Microdeletion and Other Genetic Syndromes Based on Cell Free DNA
Conditions: Microdeletion Syndromes;   Trisomy 21;   Trisomy 18;   Trisomy 13;   Sex Chromosome Abnormalities
Intervention:

Indicates status has not been verified in more than two years