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- Ensayo clínico NCT00502229
Therapy for Infertile PCOS Patients Ovulating Under Clomiphene Citrate or Metformin
What is the Following Step to Improve Fertility in Infertile PCOS Patients Ovulating Under Clomiphene Citrate or Metformin? A Randomized Controlled Clinical Study.
Several data demonstrated that both clomiphene citrate (CC) and metformin are two safe and valid first-step options to induce ovulation in infertile anovulatory PCOS patients. Notwithstanding a high percentage of patients ovulate under treatment, only ~40% and 60% of subjects obtain a pregnancy after CC and metformin, respectively.
For these patients, controlled ovarian stimulation (COS) followed by intrauterine insemination (IUI) could be the next therapeutic step before assisted reproductive techniques since IUI improves significantly the fertility in couples with unexplained infertility. Furthermore, to date it is not defined if COS should be obtained using the same ovulatory agent (CC or metformin) or switching the treatment to gonadotropins.
In this view, the aim of the present study will be to evaluate the best management of infertile PCOS patients ovulating after CC or metformin.
Descripción general del estudio
Estado
Condiciones
Intervención / Tratamiento
Descripción detallada
Infertile PCOS patients who ovulated under CC or metformin without pregnancy achievement will be enrolled and treated with three trials of COS plus IUI. All patients will be randomly allocated into two different groups (groups A and B). In group A, COS will be obtained using the same ovulatory agent (CC or metformin) employed in the previous ovulatory cycles, whereas in group B using gonadotropins in a low-dose step-up regimen.
All patients eligible will undergo baseline assessment consisting of anthropometric, hormonal, and ultrasonographic evaluations. During the study, the clinical and reproductive outcomes, and the adverse experience will be evaluated and the will be analyzed also categorizing the patients according to ovulatory agent used for COS (CC or metformin).
Data will be analyzed using the intention-to-treat principle and a P value of 0.05 or less will be considered significant. Continuous variables will be analyzed with the unpaired t test and general linear model for repeated measures analysis with Bonferroni test for the post-hoc analysis as required. For categorical variables, the Pearson chi-square and Fisher's exact tests will be used. Cumulative pregnancy rate, our primary end-point, will be calculated by the Kaplan-Maier method, and the differences between the two groups will be assessed with the log-rank test. Cox proportional-hazards model will be used to calculate the hazard ratio for new pregnancy in both groups.
Tipo de estudio
Fase
- Fase 4
Contactos y Ubicaciones
Ubicaciones de estudio
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Catanzaro, CZ
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Catanzaro, Catanzaro, CZ, Italia, 88100
- Pugliese Hospital
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Criterios de participación
Criterio de elegibilidad
Edades elegibles para estudiar
Acepta Voluntarios Saludables
Géneros elegibles para el estudio
Descripción
Inclusion Criteria:
- Polycystic ovary syndrome (using NIH criteria)
- Anovulatory infertility (using WHO criteria)
Exclusion Criteria:
- Age <18 or >35 years
- Severe obesity (BMI >35)
- Neoplastic, metabolic, hepatic, and cardiovascular disorders or other concurrent medical illnesses
- Hypothyroidism, hyperprolactinemia, Cushing's syndrome, and non-classical congenital adrenal hyperplasia
- Current or previous (within the last six months) use of oral contraceptives, glucocorticoids, antiandrogens, antidiabetic and anti-obesity drugs or other hormonal drugs
- Intention to start a diet or a specific program of physical activity
- Organic pelvic diseases
- Previous pelvic surgery
- Suspected peritoneal factor infertility
- Tubal or male factor infertility or sub-fertility
Plan de estudios
¿Cómo está diseñado el estudio?
Detalles de diseño
- Propósito principal: Tratamiento
- Asignación: Aleatorizado
- Modelo Intervencionista: Asignación paralela
- Enmascaramiento: Ninguno (etiqueta abierta)
Armas e Intervenciones
Grupo de participantes/brazo |
Intervención / Tratamiento |
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Comparador activo: Group A
Continuing treatment
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Comparador activo: Group B
Gonadotrophins
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¿Qué mide el estudio?
Medidas de resultado primarias
Medida de resultado |
Periodo de tiempo |
---|---|
Pregnancy rate
Periodo de tiempo: one year
|
one year
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Medidas de resultado secundarias
Medida de resultado |
Periodo de tiempo |
---|---|
Ovulation rate Abortion rate Live-birth rate Adverse events
Periodo de tiempo: one year
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one year
|
Colaboradores e Investigadores
Patrocinador
Investigadores
- Investigador principal: Stefano Palomba, MD, Department of Obstetrics & Gynecology, University "Magna Graecia" of Catanzaro
- Investigador principal: Francesco Orio, MD, Department of Endocrinology, University "Federico II" of Naples
- Investigador principal: Achille Tolino, MD, Department of Obstetrics & Gynecology, University "Federico II" of Naples
Publicaciones y enlaces útiles
Publicaciones Generales
- Palomba S, Orio F Jr, Falbo A, Russo T, Tolino A, Zullo F. Clomiphene citrate versus metformin as first-line approach for the treatment of anovulation in infertile patients with polycystic ovary syndrome. J Clin Endocrinol Metab. 2007 Sep;92(9):3498-503. doi: 10.1210/jc.2007-1009. Epub 2007 Jun 26.
- Palomba S, Orio F Jr, Falbo A, Manguso F, Russo T, Cascella T, Tolino A, Carmina E, Colao A, Zullo F. Prospective parallel randomized, double-blind, double-dummy controlled clinical trial comparing clomiphene citrate and metformin as the first-line treatment for ovulation induction in nonobese anovulatory women with polycystic ovary syndrome. J Clin Endocrinol Metab. 2005 Jul;90(7):4068-74. doi: 10.1210/jc.2005-0110. Epub 2005 Apr 19.
- Palomba S, Falbo A, Orio F Jr, Manguso F, Russo T, Tolino A, Annamaria C, Dale B, Zullo F. A randomized controlled trial evaluating metformin pre-treatment and co-administration in non-obese insulin-resistant women with polycystic ovary syndrome treated with controlled ovarian stimulation plus timed intercourse or intrauterine insemination. Hum Reprod. 2005 Oct;20(10):2879-86. doi: 10.1093/humrep/dei130. Epub 2005 Jun 15.
Fechas de registro del estudio
Fechas importantes del estudio
Inicio del estudio
Finalización primaria (Actual)
Fechas de registro del estudio
Enviado por primera vez
Primero enviado que cumplió con los criterios de control de calidad
Publicado por primera vez (Estimar)
Actualizaciones de registros de estudio
Última actualización publicada (Estimar)
Última actualización enviada que cumplió con los criterios de control de calidad
Última verificación
Más información
Términos relacionados con este estudio
Palabras clave
Términos MeSH relevantes adicionales
- Neoplasias
- Enfermedades del sistema endocrino
- Quistes en los ovarios
- Quistes
- Enfermedades Ováricas
- Enfermedades anexiales
- Trastornos gonadales
- Sindrome de Ovario poliquistico
- Esterilidad
- Agentes hipoglucemiantes
- Efectos fisiológicos de las drogas
- Hormonas, sustitutos hormonales y antagonistas hormonales
- Antagonistas de hormonas
- Antagonistas de estrógeno
- Agentes de control reproductivo
- Agentes de fertilidad femeninos
- Agentes de fertilidad
- Moduladores selectivos del receptor de estrógeno
- Moduladores del receptor de estrógeno
- Metformina
- Clomifeno
- Enclomifeno
- Zuclomifeno
Otros números de identificación del estudio
- 05/2006c
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