Crossover Trial for Nicotinamide Riboside in Subjective Cognitive Decline and Mild Cognitive Impairment

Not Applicable

Completed

Conditions: Cognitive Decline
Mild Cognitive Impairment
Cognition Disorders in Old Age

Interventions: Dietary Supplement: Niagen

Registration Number: NCT04078178

Lead Sponsor: Steven E Arnold, MD

Brief Summary: In this research study we want to learn more about whether taking Niagen, a daily supplement containing a form of Vitamin B3, will improve cognitive function, mood, and daily activity in people with Subjective Cognitive Decline (SCD) or Mild Cognitive Impairment (MCI).

Detailed Description: Over a 6 month period, we will ask study participants to take both Niagen or a placebo for 8 weeks each and complete research visits ever 4 or 8 weeks. Most research visits will involve a blood draw, cognitive testing, and mood questionnaires. We will ask you to come to our center 4-5 times to complete some study activities in-person. There will be an option to participate in a lumbar puncture sub-study, in which participants would have up to 3 lumbar punctures. There will also be an option to participate in an MRI sub-study, in which participants would have up to 3 MRIs over the course of the study. In between research visits, we will also ask the participants to wear a Fitbit activity tracker and play computerized brain games a few times a week. This will enable us to get a snapshot of each subject's functioning levels day to day and better determine whether or not the supplement is having an effect on the participant.

Recruitment & Eligibility

Status: COMPLETED

Sex: All

Target Recruitment: 61

Inclusion Criteria

Not provided

Exclusion Criteria

Any specific CNS disease history other than suspected ADRD, such as major clinical stroke, brain tumor, normal pressure hydrocephalus, multiple sclerosis, significant head trauma with persistent neurological of cognitive deficits or complaints;
Any impairment in instrumental activities of daily living that would indicate a level of cognitive impairment beyond MCI as assessed by a trained rater;
Clinically significant unstable medical condition that could affect safety or compliance with the study and would, in the opinion of the investigator, pose a risk to the participant if they were to participate in the study;
History of neuroimaging with evidence of major infarction, injury, infection, or other focal lesions that may be related to cognitive dysfunction;
If participating in the optional lumbar puncture sub-study, any contraindication to undergo lumbar punctures, such as:
1. abnormal coagulation PT/INR test result, outside of the normal range of 0.9 to 1.2 platelet counts below 50,000 (determined by a licensed study physician or Nurse Practitioner after reading test results).
2. Platelet counts below 50,000.
3. Use of Coumadin, Warfarin, or other blood thinner medications.
4. Infection near the puncture site, or spinal column deformities (a licensed physician or Nurse Practitioner will examine the site visually for infection or spinal deformities before performing the procedure).
5. Known allergy to Lidocaine.
Major active or chronic unstable psychiatric illness (e.g. depression, bipolar disorder, obsessive compulsive disorder, schizophrenia) within the previous year;
Current suicidal ideation or history of suicide attempt;
History of alcohol or other substance abuse or dependence within the past two years;
Any significant systemic illness or medical condition that could affect safety or compliance with study;
Laboratory abnormalities in Vitamin B12, Thyroid Stimulating Hormone (TSH), or other common laboratory parameters that might contribute to cognitive dysfunction or other abnormalities in hematological, hepatic or renal function tests;
Current use of medications with psychoactive properties that in the opinion of the principal investigator, may be deleteriously affecting cognition (e.g., anticholinergics, antihistamines, antipsychotics, sedative hypnotics, anxiolytics);
Any known hypersensitivity to nicotinamide riboside, or its principal metabolite, nicotinamide mononucleotide;
No consumption of dietary supplements containing more than 100mg niacin, nicotinamide riboside (NR), or nicotinamide mononucleotide (NMN) as the primary agents 30 days prior to baseline and for the duration of the trial;
Use of other investigational agents or interventions one month prior to entry and for the duration of the trial;
If participating in the optional MR sub-study: Any contraindication to undergo MRI studies, such as history of cardiac pacemaker or pacemaker wires, metallic particles in the body, vascular clips in the head, prosthetic heart valves, and/or severe claustrophobia impeding ability to participate in an imaging study.

Study & Design

Study Type: INTERVENTIONAL

Study Design: CROSSOVER

Arm && Interventions

Group	Intervention	Description
Randomized Crossover	Niagen	The primary outcome of this study will be objective measures of cognitive performance measured with the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) at baseline, crossover, and the end of study. Subjects will receive 1200 mg Niagen and PBO dispensed in randomized blocks. All subjects will receive both.

Primary Outcome Measures

Name	Time	Method
The Effect of Niagen vs PBO on Cognition as Measured by the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS).	From baseline through end of study at 16 weeks	The primary outcome of this study will be objective measures of cognitive performance measured with the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS) at baseline, crossover, and the end of study. RBANS has a mean score of 100 with a standard deviation of 15. Scores range from 40 to 160. Higher scores indicate normal cognition.

Secondary Outcome Measures