Safety, Efficacy and Pharmacokinetics of Doxycycline Plus Tauroursodeoxycholic Acid in Transthyretin Amyloidosis
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This study is being conducted to explore the potential benefits of a twelve-month doxycycline (at the best tolerated dose of 200 mg/day) and tauroursodeoxycholic acid (750 mg/day) treatment on disease progression in patients affected by transthyretin amyloidosis, including: 1) patients not eligible for liver transplantation; 2) patients eligible for liver transplantation, as a "bridge" therapy between the time of diagnosis and surgery, with the aim of stabilizing the disease; 3) patients showing disease progression after liver transplantation performed since at least 1 year.
It is a phase II, therapeutic exploratory, two-part, 18-month, single centre, prospective study.
Part I is a 12-month, open label treatment period in which doxycycline (200 mg/day, continuously) and tauroursodeoxycholic acid (750 mg/day continuously) are administered to 40 consenting subjects with transthyretin amyloidosis. Part II is a withdrawal period in which subjects will be monitored for disease progression. During part I, subjects will be evaluated at baseline (study Day 0), and then after 3, 6, 9 and 12 months of doxycycline plus tauroursodeoxycholic acid treatment or at premature treatment discontinuation; during part II, they will be assessed at months 15 and 18. Monthly phone contacts and blood tests will be performed to monitor potential adverse events.
Condition | Intervention | Phase |
---|---|---|
Transthyretin Amyloidosis |
Drug: Doxycycline + Tauroursodeoxycholic acid |
Phase 2 |
Study Type: | Interventional |
Study Design: | Allocation: Non-Randomized Endpoint Classification: Safety/Efficacy Study Intervention Model: Single Group Assignment Masking: Open Label Primary Purpose: Treatment |
Official Title: | A Single Center, Twelve-month, Open-label, Prospective Study Followed by a Six-month Withdrawal Period to Evaluate the Efficacy, Tolerability, Safety and Pharmacokinetics of Doxycycline in Combination With Tauroursodeoxycholic Acid in Transthyretin Amyloidosis |
- Response rate to doxycycline + tauroursodeoxycholic acid treatment [ Time Frame: One year ] [ Designated as safety issue: No ]
A responder is a subject with:
- a modified body mass index (mBMI) reduction of less than 10% and a change in the Neurologic Impairment Score-Lower Limbs (NIS-LL) <2 (in subjects with peripheral neuropathy);
- a modified body mass index (mBMI) reduction of less than 10% and an increase in N-terminal natriuretic peptide type B (NT-proBNP) concentration of less than 30% or < 300 pg/mL (in subjects with isolated cardiomyopathy).
- Number of patients experiencing treatment-emergent adverse events [ Time Frame: One year ] [ Designated as safety issue: Yes ]
- Change in quality of life [ Time Frame: Every six months ] [ Designated as safety issue: No ]SF-36 scale
- doxycycline pharmacokinetics (PK) [ Time Frame: Every three months ] [ Designated as safety issue: No ]
- response in autonomic dysfunction, sensory-motor peripheral neuropathy and visceral organ involvement [ Time Frame: One year ] [ Designated as safety issue: No ]response assessed according to the Kumamoto Scale score
- neurologic response [ Time Frame: One year ] [ Designated as safety issue: No ]response assessed by motor and sensory nerves conduction studies
- Incidence of patients discontinuing from the study because of clinical or laboratory adverse events [ Time Frame: One year ] [ Designated as safety issue: Yes ]
Estimated Enrollment: | 40 |
Study Start Date: | July 2010 |
Estimated Study Completion Date: | December 2012 |
Estimated Primary Completion Date: | July 2012 (Final data collection date for primary outcome measure) |
Arms | Assigned Interventions |
---|---|
Experimental: Doxycycline + Tauroursodeoxycholic acid |
Drug: Doxycycline + Tauroursodeoxycholic acid
doxycycline 100 mg twice a day for 12 months; tauroursodeoxycholic acid 250 mg three times a day for 12 months
|
Ages Eligible for Study: | 18 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Inclusion Criteria:
- Histochemical diagnosis of amyloidosis as based on detection by polarizing microscopy of green birefringent material in Congo red-stained tissue specimens;
- Molecular definition of the transthyretin (TTR) mutation or immunohistochemical staining of amyloid fibrils with anti-TTR antibody;
- ECOG performance status (PS) 0, 1, 2;
- New York Heart Association (NYHA) class ≤III
- Systolic blood pressure ≥100 mmHg (standing)
- Must have symptomatic organ involvement with amyloid to justify therapy; must have evidence of neuropathy and/or cardiomyopathy progression after liver transplantation performed since at least one year.
- Contraception for women of childbearing potential. Medically approved contraception could include abstinence. A negative serum pregnancy test is required prior to initiation of treatment with study medication.
Exclusion Criteria:
- Liver transplantation in the previous 12 months or liver transplantation anticipated in less than 6 months;
- ALT and/or AST ≥ 2 x Upper Normal Limit (UNL);
- Alkaline phosphatase ≥ 2 x UNL;
- Creatinine clearance < 30 ml/min;
- Any other lab values that in the opinion of the investigator might place the subject at unacceptable risk for participation in the study;
- Echocardiographic ejection fraction < 50%;
- Other neuropathies, due to vitamin B12 deficiency, alcoholism, hypothyroidism, uremia, diabetes mellitus, vasculitides;
- History of poor compliance;
- History of hypersensitivity to any of the ingredients of the study therapies;
- Use of any investigational drug, device (or biologic) within 4 weeks prior to study entry or during the study.
Italy | |
Amyloid Research and Treatment Centre, Biotechnology Research Laboratories | Recruiting |
Pavia, Italy, 27100 | |
Contact: Laura Obici, MD +39 0382 50 ext 2983 l.obici@smatteo.pv.it | |
Contact: Leda Roggeri, Bsc +39 0382 50 ext 2967 leda78@gmail.com | |
Principal Investigator: Giampaolo Merlini, MD | |
Sub-Investigator: Laura Obici, MD |
Principal Investigator: | Giampaolo Merlini, MD | IRCCS Policlinico San Matteo |
Publications:
Responsible Party: | Prof. Giampaolo Merlini, Director, Amyloid Centre, Biotechnoogy Research Laboratories, Fondazione Policlinico San Matteo |
ClinicalTrials.gov Identifier: | NCT01171859 History of Changes |
Other Study ID Numbers: | DOXYTUDCA2010, 2010-020422-17 |
Study First Received: | July 27, 2010 |
Last Updated: | April 25, 2011 |
Health Authority: | Italy: National Monitoring Centre for Clinical Trials - Ministry of Health |
Keywords provided by IRCCS Policlinico S. Matteo:
amyloidosis transthyretin doxycycline Tauroursodeoxycholic acid |
Additional relevant MeSH terms:
Amyloidosis Proteostasis Deficiencies Metabolic Diseases Doxycycline Doxycycline hyclate Tauroursodeoxycholic acid Taurochenodeoxycholic Acid Anti-Bacterial Agents Anti-Infective Agents |
Therapeutic Uses Pharmacologic Actions Antimalarials Antiprotozoal Agents Antiparasitic Agents Cholagogues and Choleretics Gastrointestinal Agents Antiviral Agents |
ClinicalTrials.gov processed this record on October 17, 2012