Pharmacokinetic Aspects of 25-mg Estradiol Pellet in Climacteric Women

Menopause Clinical Trial

— CLARA  

Official title:

Pharmacokinetic Aspects of 25-mg Estradiol Pellet in Climacteric Women Comprehensive Longitudinal Assessment of Release With Estradiol Pellet Analysis (CLARA Study)

Clinical Trial Details — Status: Recruiting

Administrative data

• NCT number: NCT06136208
• Other study ID #: CLARA Study
• Status: Recruiting
• Phase: N/A
• Start date: December 13, 2023
• Est. completion date: October 30, 2024

Study information

• Verified date: March 2024
• Source: Science Valley Research Institute
• Contact: Leandro Agati
• Phone: +551144688183
• Email: agati[@]svriglobal.com
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

A multicenter, prospective, open-label clinical study will be conducted, to monitor serum concentration and pharmacokinetic profile after subcutaneous implantation of a 25mg absorbable pellet containing estradiol in climacteric women.

Description:

Assessing serum total estradiol concentration and determination of pharmacokinetic parameters will be performed in participants eligible for the study before and after the insertion of estradiol pellet (25 mg) at different collection times [in the first 24 hours, weekly in the first month and monthly until 6 months are complete]. Additionally, the concentration of other hormones influenced by the action of estradiol will be determined (total testosterone, estrone, FSH, LH, SHBG, and prolactin). Medical visits will be carried out for clinical evaluation and follow-up of the participants in the baseline and after 1 month, 3 months, and 6 months. Assessment of the primary outcome will be performed 6 months after estradiol pellet insertion.

Recruitment information / eligibility

• Status: Recruiting
• Enrollment: 25
• Est. completion date: October 30, 2024
• Est. primary completion date: October 30, 2024
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Female
• Age group: 41 Years to 59 Years

Eligibility

Inclusion Criteria:

• Signed Informed Consent Form
• Woman aged = 41 and = 59 years
• Weight = 50 kg and = 90 kg- BMI = 18.5 and = 34.9 kg/m²
• Hysterectomy (with or without oophorectomy)
• Hypoestrogenism defined by serum total estradiol concentration = 50 pg/mL and serum FSH concentration = 25 mIU/mL
• Women with climacteric symptoms
• Absence of signs and symptoms and propedeutics suggestive of breast cancer evidenced by mammography report (woman aged > 40 years) for less than 12 months = BI-RADS1 or BI-RADS2
• Agreement not to use other hormones (estrogens, androgens and/or progestogens) in any pharmaceutical form during the study

Exclusion Criteria:

• Contraindications to the use of menopausal hormone therapy: Bleeding vaginal of unknown cause; personal history of hormone-dependent neoplasm including breast cancer, precursor lesions of breast cancer; liver disease; porphyria; personal history of coronary artery disease, cerebrovascular and venous thromboembolism; systemic lupus erythematosus with high thromboembolic risk and meningioma
• Comorbidities associated with increased cardiovascular risk: smoking, uncontrolled diabetes, dyslipidemia, and uncontrolled hypertension
• Serious chronic disorders, including metastatic malignancies, kidney disease in the end-stage with or without dialysis, clinically unstable heart disease, or any another disorder that, in the opinion of the investigator, excludes the participant from the study
• Immunocompromise or suspected or confirmed diagnosis of immunodeficiency based on history and/or physical or laboratory examination
• Active liver disease or dysfunction
• Benign or malignant tumors of the liver
• Clinical diagnosis of polycystic ovary syndrome
• Use of other hormones (estrogens, androgens and/or progestogens) in any pharmaceutical form in the last month
• Current use of drugs that alter cytochrome P450 and metabolization of Estrogens
• Current use of tamoxifen, aromatase inhibitors, or agonists/antagonists GnRH for cancer or any other condition
• Current use of phytoestrogens
• Participation in another clinical study within 30 days prior to the start of the Study treatment

Related Conditions & MeSH terms

• Climacteric Syndrome
• Hypoestrogenism
• Menopause

Intervention

Drug:
• s.c 25 mg estradiol pellet
Subcutaneous insertion of 25 mg estradiol pellet.

Locations

Country	Name	City	State
Brazil	Irmandade Da Santa Casa De Misericórdia De Santos - Science Valley Research Center	Santos	São Paulo

Sponsors (2)

Lead Sponsor	Collaborator
Science Valley Research Institute	Biòs Farmacêutica

Country where clinical trial is conducted

Brazil, 

References & Publications (13)

Casals G, Costa RF, Rull EU, Escobar-Morreale HF, Argente J, Sesmilo G, Biagetti B. Recommendations for the measurement of sexual steroids in clinical practice. A position statement of SEQCML/SEEN/SEEP. Adv Lab Med. 2023 Mar 9;4(1):52-69. doi: 10.1515/almed-2023-0020. eCollection 2023 Apr. — View Citation

del Carmen Cravioto M, Larrea F, Delgado NE, Escobar AR, Diaz-Sanchez V, Dominguez J, de Leon RP. Pharmacokinetics and pharmacodynamics of 25-mg estradiol implants in postmenopausal Mexican women. Menopause. 2001 Sep-Oct;8(5):353-60. doi: 10.1097/00042192-200109000-00010. — View Citation

Hamoda H, Panay N, Pedder H, Arya R, Savvas M. The British Menopause Society & Women's Health Concern 2020 recommendations on hormone replacement therapy in menopausal women. Post Reprod Health. 2020 Dec;26(4):181-209. doi: 10.1177/2053369120957514. Epub 2020 Oct 12. No abstract available. — View Citation

Kuhl H. Pharmacology of estrogens and progestogens: influence of different routes of administration. Climacteric. 2005 Aug;8 Suppl 1:3-63. doi: 10.1080/13697130500148875. — View Citation

Lobo RA, March CM, Goebelsmann U, Krauss RM, Mishell DR Jr. Subdermal estradiol pellets following hysterectomy and oophorectomy. Effect upon serum estrone, estradiol, luteinizing hormone, follicle-stimulating hormone, corticosteroid binding globulin-binding capacity, testosterone-estradiol binding globulin-binding capacity, lipids, and hot flushes. Am J Obstet Gynecol. 1980 Nov 15;138(6):714-9. — View Citation

Lobo RA. Hormone-replacement therapy: current thinking. Nat Rev Endocrinol. 2017 Apr;13(4):220-231. doi: 10.1038/nrendo.2016.164. Epub 2016 Oct 7. — View Citation

Manson JE, Bassuk SS, Kaunitz AM, Pinkerton JV. The Women's Health Initiative trials of menopausal hormone therapy: lessons learned. Menopause. 2020 Aug;27(8):918-928. doi: 10.1097/GME.0000000000001553. — View Citation

Notelovitz M, Johnston M, Smith S, Kitchens C. Metabolic and hormonal effects of 25-mg and 50-mg 17 beta-estradiol implants in surgically menopausal women. Obstet Gynecol. 1987 Nov;70(5):749-54. — View Citation

Owen EJ, Siddle NC, McGarrigle HT, Pugh MA. 25 mg oestradiol implants--the dosage of first choice for subcutaneous oestrogen replacement therapy? Br J Obstet Gynaecol. 1992 Aug;99(8):671-5. doi: 10.1111/j.1471-0528.1992.tb13853.x. — View Citation

Stanczyk FZ, Shoupe D, Nunez V, Macias-Gonzales P, Vijod MA, Lobo RA. A randomized comparison of nonoral estradiol delivery in postmenopausal women. Am J Obstet Gynecol. 1988 Dec;159(6):1540-6. doi: 10.1016/0002-9378(88)90591-1. — View Citation

Stuenkel CA, Davis SR, Gompel A, Lumsden MA, Murad MH, Pinkerton JV, Santen RJ. Treatment of Symptoms of the Menopause: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2015 Nov;100(11):3975-4011. doi: 10.1210/jc.2015-2236. Epub 2015 Oct 7. — View Citation

Suhonen SP, Allonen HO, Lahteenmaki P. Sustained-release subdermal estradiol implants: a new alternative in estrogen replacement therapy. Am J Obstet Gynecol. 1993 Nov;169(5):1248-54. doi: 10.1016/0002-9378(93)90291-p. — View Citation

Thom MH, Collins WP, Studd JW. Hormonal profiles in postmenopausal women after therapy with subcutaneous implants. Br J Obstet Gynaecol. 1981 Apr;88(4):426-33. doi: 10.1111/j.1471-0528.1981.tb01008.x. — View Citation

* Note: There are 13 references in all — Click here to view all references

Outcome

Type	Measure	Description	Time frame	Safety issue
Other	Adverse events	Number of participants experiencing serious adverse events (SAEs) and adverse events leading to discontinuation in the study. Adverse events reported by study participants (any including non-serious ones)	pre-insertion of the estradiol pellet; 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Primary	Serum total estradiol concentration	Multiple blood sample will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days , 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and will be determined by liquid chromatography (LC-MS/MS)	0, 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days , 21 days , 28 days , 56 days, 84 days, 112 days, 140 days and 168 days
Primary	Area under the curve (AUC(0 8))	Multiple blood sample will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days , 21 days, 28 days, 56 days, 84 days ,112 days ,140 days and 168 days and will be determined by liquid chromatography (LC-MS/MS)	0, 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Primary	Maximum concentration (Cmax)	Multiple blood sample will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and will be determined by liquid chromatography (LC-MS/MS)	0, 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Primary	Time to reach maximum concentration (tmax)	Multiple blood sample will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and will be determined by liquid chromatography (LC-MS/MS)	0, 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Primary	Half Life (t1/2)	Multiple blood sample will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 dyas, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and will be determined by liquid chromatography (LC-MS/MS).	0, 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Secondary	Total testosterone concentration	Multiple blood will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and total testosterone concentrations will be determined by Liquid chromatography - mass spectrometry	Pre-insertion of the estradiol pellet; 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days,140 days and 168 days
Secondary	Estrone concentration	Multiple blood will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours , 24 hours; 7 days, 14 days , 21 days , 28days , 56 days, 84 days, 112 days , 140 days and 168 days and estrone concentrations will be determined by enzyme immunoassay.	Pre-insertion of the estradiol pellet; 2h, 4h, 6h, 8h, 10h, 12, 24h; 7, 14, 21, 28, 56, 84, 112, 140 and 168 days
Secondary	Follicle - stimulating hormone FSH concentration	Multiple blood will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and Follicle-stimulating hormone concentrations will be determined by electrochemiluminescence	Pre-insertion of the estradiol pellet; 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Secondary	Luteinizing hormone - hormone LH concentration	Multiple blood will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and Follicle-stimulating hormone concentrations will be determined by electrochemiluminescence	Pre-insertion of the estradiol pellet; 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Secondary	Sex hormone binding globulin SHBG concentration	Multiple blood will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days,28 dyas, 56 days, 84 days, 112 days, 140 days and 168 days and Follicle-stimulating hormone concentrations will be determined by electrochemiluminescence	Pre-insertion of the estradiol pellet; 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days
Secondary	Prolactin concentration	Multiple blood will be collected before pellet implantation and 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days and Follicle-stimulating hormone concentrations will be determined by electrochemiluminescence	Pre-insertion of the estradiol pellet; 2 hours, 4 hours, 6 hours, 8 hours, 10 hours, 12 hours, 24 hours; 7 days, 14 days, 21 days, 28 days, 56 days, 84 days, 112 days, 140 days and 168 days