Metformin as a Novel Therapy for Autosomal Dominant Polycystic Kidney Disease

Polycystic Kidney, Autosomal Dominant Clinical Trial

— TAME  

Official title:

Metformin as a Novel Therapy for Autosomal Dominant Polycystic Kidney Disease

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT02656017
• Other study ID #: PRO15060422
• Secondary ID: CDMRP-PR141606
• Status: Completed
• Phase: Phase 2
• Start date: June 27, 2016
• Est. completion date: December 7, 2020

Study information

• Verified date: August 2022
• Source: University of Pittsburgh
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

This study will test to see if metformin is safe and if it is tolerated compared to placebo in adult Autosomal Dominant Polycystic Kidney Disease (ADPKD) patients with beginning stages of chronic kidney disease. We will also measure its effect on progression of kidney disease as reflected in the kidney size and the kidney function, along with its effect on kidney pain and quality of life.

Description:

There is growing evidence that metformin, a drug widely used for the treatment of type 2 diabetes and polycystic ovary syndrome, may serve as a novel therapy for individuals in the early stages of Autosomal Dominant Polycystic Kidney Disease ADPKD by activating the metabolic sensor AMP-activated protein kinase (AMPK). AMPK is activated under conditions of metabolic and other cellular stresses. Through its actions on downstream mediators, AMPK activation during low energy states decreases cellular energy consumption while stimulating energy generating pathways. It has been shown that AMPK phosphorylates and inhibits cystic fibrosis transmembrane conductance regulator (CFTR), thus suppressing epithelial fluid and electrolyte secretion. Similarly, AMPK phosphorylates the tuberin protein, leading to indirect inhibition of the mTOR pathway. Thus, AMPK inhibits both CFTR and mTOR, suggesting that targeted activation of this kinase by metformin may provide a therapeutic benefit in ADPKD. It has been shown that metformin treatment of kidney epithelial cells leads to stimulation of AMPK and subsequent inhibition of both mTOR and CFTR activity. It has also been shown that metformin slows cystogenesis in animal models of PKD, supporting the potential of this drug in ADPKD treatment.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 97
• Est. completion date: December 7, 2020
• Est. primary completion date: December 7, 2020
• Accepts healthy volunteers: No
• Gender: All
• Age group: 18 Years to 60 Years

Eligibility

Inclusion Criteria:

Subject has Autosomal Dominant Polycystic Kidney Disease; Subject is fluent in English Exclusion Criteria: Subject is not on active military duty; Subject is not currently participating in another clinical trial; Subject's current GFR is not <50 cc/min/1.73m2; Subject does not have diabetes; Subject does not have a systemic disease other than hypertension and PKD; Subject does not have a solitary kidney; Subject does not have an allergy or intolerance to metformin; Subject is not pregnant or lactating or intending to become pregnant within the next three years; Subject does not have an unstable or unclipped cerebral aneurysm; Subject does not have active coronary artery disease; Subject does not have an MRI incompatible device/implant; Subject does not have severe claustrophobia; Subject has not had any solid organ transplant; Subject does not have a Vitamin B12 deficiency; Subject does not currently take any medications that interact with metformin, such as nifedipine, furosemide, cationic drugs (amiloride, ranitidine, triamterene digoxin, procainamide, quinidine, vancomycin, trimethoprim); Subject does not currently take nor has taken (within 2 weeks) the drug tolvaptan (Jynarque or Samsca)

Related Conditions & MeSH terms

• Arthrogryposis
• Kidney Diseases
• Polycystic Kidney Diseases
• Polycystic Kidney, Autosomal Dominant

Intervention

Drug:
• Metformin
Monitoring of tolerability and symptoms.

Other:
• Placebo
Monitoring of tolerability and symptoms.

Locations

Country	Name	City	State
United States	University of Maryland Medical Center	Baltimore	Maryland
United States	Tufts Medical Center	Boston	Massachusetts

Sponsors (5)

Lead Sponsor	Collaborator
Kyongtae Ty Bae, M.D., Ph.D.	Tufts Medical Center, United States Department of Defense, University of Maryland, Baltimore, University of Southern California

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Change in the Gastrointestinal Symptoms Rating Scale (GSRS) to 24 Months	GSRS is a widely used, validated 15-item questionnaire used to assess GI symptom burden (minimum, maximum: 1, 7, where higher mean score is worse outcome).; Mean change to 24 months, estimated with a repeated measures analysis (baseline, 2 weeks, 6 weeks, 1 month, 3 months and every 3 months thereafter to 24 months) using a linear mixed model.	Baseline, 2 weeks, 6 weeks, 1 month, 3 months and every 3 months thereafter to 24 months
Primary	Drug Tolerability	Tolerability was based on the first visit a participant responded no to the following question "Can you tolerate this dose of study drug the rest of your life?", which was asked at baseline, 2 weeks, 6 weeks, 1 month, 3 months and every 3 months thereafter to 24 months.	Baseline, 2 weeks, 6 weeks, 1 month, 3 months and every 3 months thereafter to 24 months
Primary	Rate of Serious Adverse Events (SAE)	Serious adverse events (SAE) occurring from the time a participant signs the informed consent (at the screening visit) until the end of the study, meeting 1 or more of the criteria of: 1) Resulting in death, 2) Non-elective hospitalization, 3) Life threatening (if patient continued on study drug would result in death), 4) Harming or disabling persistently or permanently , 5) Exceeding the nature, severity or frequency of risk described in the protocol or 6) Resulting in congenital anomaly.	26 months
Secondary	Quality of Life Physical Component	Short Form-36 Quality of Life Physical Component Summary (SF-36 PCS) ranges from 0 (worst possible outcome) to 100 (best possible outcome).; Mean change to 24 months, estimated with a repeated measures analysis (baseline, 1 month, 3 months and every 3 months thereafter to 24 months) using a linear mixed model.	Baseline, 1 month, 3 months and every 3 months thereafter to 24 months
Secondary	Quality of Life Mental Component	Short Form-36 Quality of Life Mental Component Summary (SF-36 MCS) ranges from 0 (worst possible outcome) to 100 (best possible outcome).; Mean change to 24 months, estimated with a repeated measures analysis (baseline, 1 month, 3 months and every 3 months thereafter to 24 months) using a linear mixed model.	Baseline, 1 month, 3 months and every 3 months thereafter to 24 months
Secondary	Back Pain Frequency Over the Past 3 Months Since Last Visit	Odds ratio (OR) per month of back pain Often, Usually, or Always (vs. Never, Rarely, Sometimes) estimated with a repeated measures analysis (baseline, 1 month, 3 months and every 3 months thereafter to 24 months) using a generalized linear mixed model.	Baseline, 1 month, 3 months and every 3 months thereafter to 24 months
Secondary	Estimated Glomerular Filtration Rate (eGFR)	Mean change to 24 months, estimated with a repeated measures analysis (baseline, 2 weeks, 6 weeks, 1 month, 3 months and every 3 months thereafter to 24 months) using a linear mixed model.	Baseline, 2 weeks, and 6 weeks, 1 month, 3 months and every 3 months thereafter to 24 months
Secondary	Total Kidney Volume From Magnetic Resonance Imaging	Annual percent change of height adjusted and natural log transformed total kidney volume [ln(htTKV)] was estimated with a linear mixed model.	Baseline, 6 months, 12 months, 18 months, 24 months
Secondary	Total Kidney Cyst Volume From Magnetic Resonance Imaging	Annual percent change of height adjusted and natural log transformed total kidney cyst volume [ln(htTKCV)] was estimated with a linear mixed model.	Baseline, 6 months, 12 months, 18 months, 24 months
Secondary	Liver Volume From Magnetic Resonance Imaging	Annual percent change of height adjusted and natural log transformed liver volume [ln(htLV)] was estimated with a linear mixed model.	Baseline, 6 months, 12 months, 18 months, 24 months
Secondary	Liver Cyst Volume From Magnetic Resonance Imaging	Annual percent change of height adjusted and natural log transformed liver cyst volume [ln(htLCV)] was estimated with a linear mixed model.	Baseline, 6 months, 12 months, 18 months, 24 months
Secondary	Frequency Abdominal Fullness Interfered With Ability to Perform Usual Physical Activity Over the Past 3 Months Since Last Visit.	Odds ratio (OR) per month of abdominal fullness interfered Often, Usually, or Always (vs. Never, Rarely, Sometimes) estimated with a repeated measures analysis (baseline, 1 month, 3 months and every 3 months thereafter to 24 months) using a generalized linear mixed model.	Baseline, 1 month, 3 months and every 3 months thereafter to 24 months
Secondary	Interference of Pain With Sleep Over the Past 3 Months Since Last Visit	Odds ratio (OR) per month of pain interfered with sleep Quite a bit or Extremely (vs. Not at all, A little bit, Moderately) estimated with a repeated measures analysis (baseline, 1 month, 3 months and every 3 months thereafter to 24 months) using a generalized linear mixed model.	Baseline, 1 month, 3 months and every 3 months thereafter to 24 months
Secondary	Interference of Pain With Strenuous Physical Activity Over the Past 3 Months Since Last Visit	Odds ratio (OR) per month of pain interfered with strenuous physical activity Quite a bit or Extremely (vs. Not at all, A little bit, Moderately) estimated with a repeated measures analysis (baseline, 1 month, 3 months and every 3 months thereafter to 24 months) using a generalized linear mixed model.	Baseline, 1 month, 3 months and every 3 months thereafter to 24 months