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Safety and Effect of Doxycycline in Patients With Amyloidosis

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified January 2015 by John L. Berk, Boston University.
Recruitment status was:  Active, not recruiting
Information provided by (Responsible Party):
John L. Berk, Boston University Identifier:
First received: August 21, 2012
Last updated: January 2, 2015
Last verified: January 2015

The tetracycline antibiotic doxycycline disrupts A beta amyloid fibrils (AB) in Alzheimer's disease, transthyretin (ATTR) amyloid fibrils in familial amyloidotic polyneuropathy, and immunoglobulin light chain (AL) amyloid fibrils in transgenic mouse models of disease. If untreated, amyloid deposits impair organ function, affecting the morbidity and mortality of patients.

This single-center, twelve-month, open-label, prospective, pilot phase II study aims to determine whether doxycycline reduces amyloid deposits and improves organ function in patients with systemic or localized amyloidosis.

The investigators plan to enroll patients with measurable amyloid disease according to internationally-accepted diagnostic criteria. Patients must have stable organ function at enrollment. Eligible subjects not receiving active treatments for amyloidosis affecting their kidneys, heart, aerodigestive tracts, peripheral or autonomic nervous system(s), lungs, eyes, skin, bladder, or breasts will undergo evaluations at baseline, 6 months, and 12 months - or more frequently as clinically indicated.

Over 45 years experience indicates doxycycline is a safe, well tolerated antibiotic. The investigators will use standard grading systems to assess doxycycline response following twelve months of treatment.

Condition Intervention Phase
Drug: Doxycycline 100 mg po bid x 12 months
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Phase II Study of Doxycycline in Patients With Amyloidosis

Resource links provided by NLM:

Further study details as provided by John L. Berk, Boston University:

Primary Outcome Measures:
  • Composite measures specific to the organ system affected by amyloidosis at study entry [ Time Frame: 12 months ]

    Amyloid nephropathy: 24 hour urine protein excretion, creatinine clearance

    Amyloid cardiomyopathy: cardiac biomarkers (BNP, Troponin I), echo parameters (IVSd, longitudinal strain, diastolic indices [e/e']), ECG

    Amyloid peripheral neuropathy: Neurologic Impairment Score-Lower Limb (NIS-LL), modified body mass index (mBMI)

    Amyloid autonomic neuropathy: postural blood pressures, heart rate variability, mBMI

    Localized amyloidosis:

    1. airway -- PFTs, CT imaging, endoscopic visualization
    2. gastrointestinal -- endoscopic visualization
    3. bladder -- CT imaging, cystoscopy, urodynamics
    4. skin -- direct measures of disease

Secondary Outcome Measures:
  • Quality of Life [ Time Frame: 12 months ]
    Quality of Life (SF-36)

  • Kumamoto neurologic score [ Time Frame: 12 months ]
    Motor, sensory, autonomic measures of neuropathy

Estimated Enrollment: 60
Study Start Date: July 2012
Estimated Study Completion Date: December 2015
Estimated Primary Completion Date: June 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: doxycycline 100 mg po bid x 12 months
Open-label doxycycline 100 mg twice daily by mouth will be administered to subjects for 12 months.
Drug: Doxycycline 100 mg po bid x 12 months
100mg by mouth twice daily for 1 year.
Other Name: CAS: 564-25-0; ATC code: J01AA02 A01AB22; PubChem: CID 11256


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Age 18 or older
  • Biopsy-proven amyloidosis
  • Biochemical or clinical evidence of amyloid induced end-organ dysfunction

Exclusion Criteria:

  • Concurrent use of other tetracyclines
  • Ongoing active treatment for amyloidosis
  • Pregnancy or unwillingness to use contraception by women of childbearing age
  • Doxycycline drug allergy/hypersensitivity
  • ECOG performance status > 3
  • NYHA class > 3
  • Renal insufficiency (estimated creatinine clearance < 25 ml/min)
  • Transaminitis (AST or ALT > 5 times upper limit of normal)
  • Diabetes mellitus or hemoglobin A1C > 6.2%
  Contacts and Locations
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Please refer to this study by its identifier: NCT01677286

United States, Massachusetts
Boston University
Boston, Massachusetts, United States, 02118
Sponsors and Collaborators
Boston University
Principal Investigator: John L Berk, M.D. Boston University
  More Information


Responsible Party: John L. Berk, Clinical Director, Amyloid Treatment & Research Program, Boston University Identifier: NCT01677286     History of Changes
Other Study ID Numbers: H-31546
Study First Received: August 21, 2012
Last Updated: January 2, 2015

Keywords provided by John L. Berk, Boston University:
AL Amyloidosis
Primary Amyloidosis
Hereditary Amyloidosis
Familial Amyloidosis
SSA Amyloidosis
Senile Systemic Amyloidosis
AA Amyloidosis
Secondary Amyloidosis
Localized Amyloidosis
Systemic Amyloidosis

Additional relevant MeSH terms:
Proteostasis Deficiencies
Metabolic Diseases
Anti-Bacterial Agents
Anti-Infective Agents
Antiprotozoal Agents
Antiparasitic Agents processed this record on May 25, 2017