Mitochondrial MyopathiesNiaMITNCT03973203
Niacin Supplementation in Healthy Controls and Mitochondrial Myopathy Patients
A study testing Niacin in people with Mitochondrial Myopathies, run by University of Helsinki.
Trial summary
The most frequent form of adult-onset mitochondrial disorders is mitochondrial myopathy, often manifesting with progressive external ophthalmoplegia (PEO), progressive muscle weakness and exercise intolerance. Read more about this study
- Who is it for?
- Ages 17 to 70 yearsHealthy volunteers can take part
- Conditions the study is for
- Mitochondrial Myopathies
- What is being tested?
- Niacin
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 15 participants
- Where
- No sites listed yet
- Study dates
- 1 Jun 2014to 31 Dec 2018
- Phase
- Interventional
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 17 to 70 years
- All sexes
- Healthy volunteers accepted
- Child, Adult, Older adult
Who may be able to join
- Manifestation of pure mitochondrial myopathy, with no major other symptoms or manifestations, caused by single or multiple deletions of mtDNA
- Age and gender matched healthy controls for every patient
- Agreed to avoid vitamin supplementation or nutritional products with vitamin B3 forms 14 days prior to the enrollment and during the study
- Written, informed consent to participate in the study
Who cannot join
- Inability to follow study protocol
- Pregnancy or breast-feeding at any time of the trial
- Malignancy that requires continuous treatment
- Unstable heart disease
- Severe kidney disease requiring treatment
- Severe encephalopathy
- Regular usage of intoxicants
About this study
Official title: The Effect of Niacin Supplementation on Systemic Nicotinamide Adenine Dinucleotide (NAD+) Metabolism, Physiology and Muscle Performance in Healthy Controls and Mitochondrial Myopathy Patients
The most frequent form of adult-onset mitochondrial disorders is mitochondrial myopathy, often manifesting with progressive external ophthalmoplegia (PEO), progressive muscle weakness and exercise intolerance. Mitochondrial myopathy is often caused by single heteroplasmic mitochondrial DNA (mtDNA) deletions or multiple mtDNA deletions, the former being sporadic and latter caused by mutations in nuclear-encoded proteins of mtDNA maintenance. Currently, no curative treatment exists for this disease. The investigators have previously observed that supplementation with an NAD+ precursor vitamin B3, nicotinamide riboside, prevented and delayed disease symptoms by increasing mitochondrial biogenesis in a mouse model for mitochondrial myopathy. Vitamin B3 exists in several forms: nicotinic acid (niacin), nicotinamide, and nicotinamide riboside, and it has been demonstrated to give power to diseased mitochondria in animal studies by increasing intracellular levels of NAD+, the important cofactor required for the cellular energy metabolism.
In this study, the form of vitamin B3, niacin, was used to activate dysfunctional mitochondria and to rescue signs of mitochondrial myopathy. Of the vitamin B3 forms, niacin, is employed, because it has been used in large doses to treat hypercholesterolemia patients, and has a proven safety record in humans. Phenotypically similar mitochondrial myopathy patients are studied, as the investigator's previous expertise indicates that similar presenting phenotypes predict uniform physiological and clinical responses to interventions, despite varying genetic backgrounds. Patients either with sporadic single mtDNA deletions or a mutation in a Twinkle gene causing multiple mtDNA deletions were recruited. In addition, for every patient, two gender- and age-matched healthy controls are recruited. Clinical examinations and collection of muscle biopsies are performed at the time points 0, 4 and 10 months (patients) or at 0 and 4 months (controls). Fasting blood samples are collected every second week until 4 months and thereafter every six weeks until the end of the study. The effects of niacin on disease markers, muscle mitochondrial biogenesis, muscle strength and the metabolism of the whole body are studied in patients and healthy controls.
The hypothesis is that an NAD+ precursor, niacin, will increase intracellular NAD+ levels, improve mitochondrial biogenesis and alleviate the symptoms of mitochondrial myopathy in humans.
- Conditions
- Mitochondrial Myopathies
- Being tested
- Niacin
- Keywords
- vitamin B3, niacin, mitochondrial myopathy, mitochondria, muscle, muscle strength, NAD+ precursor, NAD+, NAD-booster
- Medical subject headings
- Mitochondrial Myopathies
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
NiacinDietary supplement
Also called Nicotinic acid
The dose for a slow-released form of niacin will be 750-1000 mg/day. The daily niacin dose, 250 mg/day, is gradually escalated by 250 mg/month so that the full dose is reached after 3 months. The intervention time with the full niacin dose is 1 and 7 months for controls and patients, respectively, and subsequently total intervention time 4 and 10 months, respectively. At the end of the study, the daily dose will be decreased by 250 mg/month rate.
| Study group | Role | What they receive |
|---|---|---|
| Niacin in controls | Experimental | The arm includes healthy controls supplemented with niacin. Receives: Dietary Supplement: Niacin |
| Niacin in mitochondrial myopathy patients | Experimental | The arm includes mitochondrial myopathy patients supplemented with niacin. Receives: Dietary Supplement: Niacin |
What is being measured
The primary outcome is the main question the study is designed to answer.
NAD+ and related metabolite levels in blood and muscle
Change in concentrations of NAD+ and related metabolites such as: nicotinamide adenine dinucleotide phosphate, nicotinic acid adenine dinucleotide, nicotinamide, and nicotinamide mononucleotide measured using high performance liquid chromatography-mass spectrometry
Measured: Baseline, 4 months and 10 months
Secondary outcomes (8)
Number of diseased muscle fibers
Change in number of abnormal muscle fibers (frozen sections, in situ histochemical activity analysis of cytochrome c oxidase negative / succinate-dehydrogenase positive muscle fibers; and immunohistochemistry of complex I negative muscle fibers
Measured: Baseline, 4 months and 10 months
Mitochondrial biogenesis
Change in mitochondria immunohistochemical staining intensity
Measured: Baseline, 4 months and 10 months
Muscle mitochondrial oxidative capacity
Change in muscle histochemical activity of mitochondrial cytochrome c oxidase
Measured: Baseline, 4 months and 10 months
Muscle metabolomic profile
Change in muscle metabolite concentrations measured with mass spectrometry
Measured: Baseline, 4 months and 10 months
Core muscle strength
Change in core muscle strength measured by static and dynamic back and abdominal strength tests (number of repeats)
Measured: Baseline, 4 months and 10 months
Circulating levels of disease biomarkers, fibroblast growth factor 21 (FGF21) and growth/differentiation factor 15 (GDF15)
Change in circulating FGF21 and GDF15 concentrations measured using ELISA kits
Measured: Baseline, 4 months and 10 months
Muscle mitochondrial DNA deletions
Change in muscle mtDNA deletion load detected using polymerase chain reaction amplification
Measured: Baseline, 4 months and 10 months
Muscle transcriptomic profile
Change in muscle gene expression determined using RNA sequencing approach
Measured: Baseline, 4 months and 10 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Jun 2019
- Study start1 Jun 2014
- Primary completion31 Dec 2017
- Study completion31 Dec 2018
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (12)Papers the sponsor has linked to this study.
- Other trials for Mitochondrial MyopathiesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase N/A
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Model description
- All participants (healthy controls and mitochondrial myopathy patients) receive orally administered a slow-released form of niacin.
- Masking
- None (open label)
- Enrolment
- 15 participants (actual)
Sponsor and investigators
- Lead sponsor
- University of Helsinki
- Sponsor type
- University, hospital or other
- Collaborators
- Helsinki University Central Hospital, Institute for Molecular Medicine, University of Iowa
- Responsible party
- Principal investigator, Anu Wartiovaara, University of Helsinki
- Investigators
- Anu Suomalainen Wartiovaara, MD,PhD, Principal investigator, Research Programs Unit, University of Helsinki, Helsinki, Finland
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03973203
- Sponsor's protocol ID
- NiaMIT_0001
- Acronym
- NiaMIT
- Status last verified
- May 2023
- First submitted
- 24 May 2019
- Last updated
- 11 May 2023
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Suomalainen A, Battersby BJ. Mitochondrial diseases: the contribution of organelle stress responses to pathology. Nat Rev Mol Cell Biol. 2018 Feb;19(2):77-92. doi: 10.1038/nrm.2017.66. Epub 2017 Aug 9.
PubMed 28792006Ylikallio E, Suomalainen A. Mechanisms of mitochondrial diseases. Ann Med. 2012 Feb;44(1):41-59. doi: 10.3109/07853890.2011.598547. Epub 2011 Aug 2.
PubMed 21806499Rajman L, Chwalek K, Sinclair DA. Therapeutic Potential of NAD-Boosting Molecules: The In Vivo Evidence. Cell Metab. 2018 Mar 6;27(3):529-547. doi: 10.1016/j.cmet.2018.02.011.
PubMed 29514064Khan NA, Auranen M, Paetau I, Pirinen E, Euro L, Forsstrom S, Pasila L, Velagapudi V, Carroll CJ, Auwerx J, Suomalainen A. Effective treatment of mitochondrial myopathy by nicotinamide riboside, a vitamin B3. EMBO Mol Med. 2014 Jun;6(6):721-31. doi: 10.1002/emmm.201403943.
PubMed 24711540Cerutti R, Pirinen E, Lamperti C, Marchet S, Sauve AA, Li W, Leoni V, Schon EA, Dantzer F, Auwerx J, Viscomi C, Zeviani M. NAD(+)-dependent activation of Sirt1 corrects the phenotype in a mouse model of mitochondrial disease. Cell Metab. 2014 Jun 3;19(6):1042-9. doi: 10.1016/j.cmet.2014.04.001. Epub 2014 May 8.
PubMed 24814483Guyton JR, Bays HE. Safety considerations with niacin therapy. Am J Cardiol. 2007 Mar 19;99(6A):22C-31C. doi: 10.1016/j.amjcard.2006.11.018. Epub 2006 Nov 28.
PubMed 17368274Vosper H. Niacin: a re-emerging pharmaceutical for the treatment of dyslipidaemia. Br J Pharmacol. 2009 Sep;158(2):429-41. doi: 10.1111/j.1476-5381.2009.00349.x. Epub 2009 Jul 20.
PubMed 19627285Ahola S, Auranen M, Isohanni P, Niemisalo S, Urho N, Buzkova J, Velagapudi V, Lundbom N, Hakkarainen A, Muurinen T, Piirila P, Pietilainen KH, Suomalainen A. Modified Atkins diet induces subacute selective ragged-red-fiber lysis in mitochondrial myopathy patients. EMBO Mol Med. 2016 Nov 2;8(11):1234-1247. doi: 10.15252/emmm.201606592. Print 2016 Nov.
PubMed 27647878Suomalainen A, Elo JM, Pietilainen KH, Hakonen AH, Sevastianova K, Korpela M, Isohanni P, Marjavaara SK, Tyni T, Kiuru-Enari S, Pihko H, Darin N, Ounap K, Kluijtmans LA, Paetau A, Buzkova J, Bindoff LA, Annunen-Rasila J, Uusimaa J, Rissanen A, Yki-Jarvinen H, Hirano M, Tulinius M, Smeitink J, Tyynismaa H. FGF-21 as a biomarker for muscle-manifesting mitochondrial respiratory chain deficiencies: a diagnostic study. Lancet Neurol. 2011 Sep;10(9):806-18. doi: 10.1016/S1474-4422(11)70155-7. Epub 2011 Aug 3.
PubMed 21820356Nikkanen J, Forsstrom S, Euro L, Paetau I, Kohnz RA, Wang L, Chilov D, Viinamaki J, Roivainen A, Marjamaki P, Liljenback H, Ahola S, Buzkova J, Terzioglu M, Khan NA, Pirnes-Karhu S, Paetau A, Lonnqvist T, Sajantila A, Isohanni P, Tyynismaa H, Nomura DK, Battersby BJ, Velagapudi V, Carroll CJ, Suomalainen A. Mitochondrial DNA Replication Defects Disturb Cellular dNTP Pools and Remodel One-Carbon Metabolism. Cell Metab. 2016 Apr 12;23(4):635-48. doi: 10.1016/j.cmet.2016.01.019. Epub 2016 Feb 25.
PubMed 26924217Khan NA, Nikkanen J, Yatsuga S, Jackson C, Wang L, Pradhan S, Kivela R, Pessia A, Velagapudi V, Suomalainen A. mTORC1 Regulates Mitochondrial Integrated Stress Response and Mitochondrial Myopathy Progression. Cell Metab. 2017 Aug 1;26(2):419-428.e5. doi: 10.1016/j.cmet.2017.07.007.
PubMed 28768179Pirinen E, Auranen M, Khan NA, Brilhante V, Urho N, Pessia A, Hakkarainen A, Kuula J, Heinonen U, Schmidt MS, Haimilahti K, Piirila P, Lundbom N, Taskinen MR, Brenner C, Velagapudi V, Pietilainen KH, Suomalainen A. Niacin Cures Systemic NAD+ Deficiency and Improves Muscle Performance in Adult-Onset Mitochondrial Myopathy. Cell Metab. 2020 Jun 2;31(6):1078-1090.e5. doi: 10.1016/j.cmet.2020.04.008. Epub 2020 May 7.
PubMed 32386566
Study at a glance
From the registry record, last updated by the sponsor on 11 May 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- The Effect of Niacin Supplementation on Systemic Nicotinamide Adenine Dinucleotide (NAD+) Metabolism, Physiology and Muscle Performance in Healthy Controls and Mitochondrial Myopathy Patients
- ClinicalTrials.gov ID
- NCT03973203
- Acronym / sponsor ID
- NiaMIT / NiaMIT_0001
- Conditions
- Mitochondrial Myopathies
- Keywords
- vitamin B3, niacin, mitochondrial myopathy, mitochondria, muscle, muscle strength, NAD+ precursor, NAD+
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 15 participants (actual)
- Lead sponsor
- University of HelsinkiUniversity, hospital or other
- Collaborators
- Helsinki University Central Hospital, Institute for Molecular Medicine, University of Iowa
- Study start
- 1 Jun 2014 (actual)
- Primary completion
- 31 Dec 2017 (actual)
- Study completion
- 31 Dec 2018 (actual)
- First posted
- 4 Jun 2019 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The most frequent form of adult-onset mitochondrial disorders is mitochondrial myopathy, often manifesting with progressive external ophthalmoplegia (PEO), progressive muscle weakness and exercise intolerance. Mitochondrial myopathy is often caused by single heteroplasmic mitochondrial DNA (mtDNA) deletions or multiple mtDNA deletions, the former being sporadic and latter caused by mutations in nuclear-encoded proteins of mtDNA maintenance. Currently, no curative treatment exists for this disease. The investigators have previously observed that supplementation with an NAD+ precursor vitamin B3, nicotinamide riboside, prevented and delayed disease symptoms by increasing mitochondrial biogenesis in a mouse model for mitochondrial myopathy. Vitamin B3 exists in several forms: nicotinic acid (niacin), nicotinamide, and nicotinamide riboside, and it has been demonstrated to give power to diseased mitochondria in animal studies by increasing intracellular levels of NAD+, the important cofactor required for the cellular energy metabolism.
In this study, the form of vitamin B3, niacin, was used to activate dysfunctional mitochondria and to rescue signs of mitochondrial myopathy. Of the vitamin B3 forms, niacin, is employed, because it has been used in large doses to treat hypercholesterolemia patients, and has a proven safety record in humans. Phenotypically similar mitochondrial myopathy patients are studied, as the investigator's previous expertise indicates that similar presenting phenotypes predict uniform physiological and clinical responses to interventions, despite varying genetic backgrounds. Patients either with sporadic single mtDNA deletions or a mutation in a Twinkle gene causing multiple mtDNA deletions were recruited. In addition, for every patient, two gender- and age-matched healthy controls are recruited. Clinical examinations and collection of muscle biopsies are performed at the time points 0, 4 and 10 months (patients) or at 0 and 4 months (controls). Fasting blood samples are collected every second week until 4 months and thereafter every six weeks until the end of the study. The effects of niacin on disease markers, muscle mitochondrial biogenesis, muscle strength and the metabolism of the whole body are studied in patients and healthy controls.
The hypothesis is that an NAD+ precursor, niacin, will increase intracellular NAD+ levels, improve mitochondrial biogenesis and alleviate the symptoms of mitochondrial myopathy in humans.
Study design
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
- Model description
- All participants (healthy controls and mitochondrial myopathy patients) receive orally administered a slow-released form of niacin.
| Arm | Type | Receives |
|---|---|---|
| Niacin in controls | Experimental | Dietary Supplement: NiacinThe arm includes healthy controls supplemented with niacin. |
| Niacin in mitochondrial myopathy patients | Experimental | Dietary Supplement: NiacinThe arm includes mitochondrial myopathy patients supplemented with niacin. |
Who may qualify
- Ages
- 17 to 70 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (4 listed)
- Manifestation of pure mitochondrial myopathy, with no major other symptoms or manifestations, caused by single or multiple deletions of mtDNA
- Age and gender matched healthy controls for every patient
- Agreed to avoid vitamin supplementation or nutritional products with vitamin B3 forms 14 days prior to the enrollment and during the study
- Written, informed consent to participate in the study
Key exclusion criteria (7 listed)
- Inability to follow study protocol
- Pregnancy or breast-feeding at any time of the trial
- Malignancy that requires continuous treatment
- Unstable heart disease
- Severe kidney disease requiring treatment
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| NiacinAlso: Nicotinic acidThe dose for a slow-released form of niacin will be 750-1000 mg/day. The daily niacin dose, 250 mg/day, is gradually escalated by 250 mg/month so that the full dose is reached after 3 months. The intervention time with the full niacin dose is 1 and 7 months for controls and patients, respectively, and subsequently total intervention time 4 and 10 months, respectively. At the end of the study, the daily dose will be decreased by 250 mg/month rate. | Dietary supplement | Niacin in controls, Niacin in mitochondrial myopathy patients |
Primary outcome
NAD+ and related metabolite levels in blood and muscle
Time frame: Baseline, 4 months and 10 months
Change in concentrations of NAD+ and related metabolites such as: nicotinamide adenine dinucleotide phosphate, nicotinic acid adenine dinucleotide, nicotinamide, and nicotinamide mononucleotide measured using high performance liquid chromatography-mass spectrometry
8 secondary outcomes
Number of diseased muscle fibers
Time frame: Baseline, 4 months and 10 months
Mitochondrial biogenesis
Time frame: Baseline, 4 months and 10 months
Muscle mitochondrial oxidative capacity
Time frame: Baseline, 4 months and 10 months
Muscle metabolomic profile
Time frame: Baseline, 4 months and 10 months
Core muscle strength
Time frame: Baseline, 4 months and 10 months
Circulating levels of disease biomarkers, fibroblast growth factor 21 (FGF21) and growth/differentiation factor 15 (GDF15)
Time frame: Baseline, 4 months and 10 months
Muscle mitochondrial DNA deletions
Time frame: Baseline, 4 months and 10 months
Muscle transcriptomic profile
Time frame: Baseline, 4 months and 10 months
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 11 May 2023.
- Background: PubMed 28792006Suomalainen A, Battersby BJ. Mitochondrial diseases: the contribution of organelle stress responses to pathology. Nat Rev Mol Cell Biol. 2018 Feb;19(2):77-92. doi: 10.1038/nrm.2017.66. Epub 2017 Aug 9.
- Background: PubMed 21806499Ylikallio E, Suomalainen A. Mechanisms of mitochondrial diseases. Ann Med. 2012 Feb;44(1):41-59. doi: 10.3109/07853890.2011.598547. Epub 2011 Aug 2.
- Background: PubMed 29514064Rajman L, Chwalek K, Sinclair DA. Therapeutic Potential of NAD-Boosting Molecules: The In Vivo Evidence. Cell Metab. 2018 Mar 6;27(3):529-547. doi: 10.1016/j.cmet.2018.02.011.
- Background: PubMed 24711540Khan NA, Auranen M, Paetau I, Pirinen E, Euro L, Forsstrom S, Pasila L, Velagapudi V, Carroll CJ, Auwerx J, Suomalainen A. Effective treatment of mitochondrial myopathy by nicotinamide riboside, a vitamin B3. EMBO Mol Med. 2014 Jun;6(6):721-31. doi: 10.1002/emmm.201403943.
- Background: PubMed 24814483Cerutti R, Pirinen E, Lamperti C, Marchet S, Sauve AA, Li W, Leoni V, Schon EA, Dantzer F, Auwerx J, Viscomi C, Zeviani M. NAD(+)-dependent activation of Sirt1 corrects the phenotype in a mouse model of mitochondrial disease. Cell Metab. 2014 Jun 3;19(6):1042-9. doi: 10.1016/j.cmet.2014.04.001. Epub 2014 May 8.
- Background: PubMed 17368274Guyton JR, Bays HE. Safety considerations with niacin therapy. Am J Cardiol. 2007 Mar 19;99(6A):22C-31C. doi: 10.1016/j.amjcard.2006.11.018. Epub 2006 Nov 28.
- Background: PubMed 19627285Vosper H. Niacin: a re-emerging pharmaceutical for the treatment of dyslipidaemia. Br J Pharmacol. 2009 Sep;158(2):429-41. doi: 10.1111/j.1476-5381.2009.00349.x. Epub 2009 Jul 20.
- Background: PubMed 27647878Ahola S, Auranen M, Isohanni P, Niemisalo S, Urho N, Buzkova J, Velagapudi V, Lundbom N, Hakkarainen A, Muurinen T, Piirila P, Pietilainen KH, Suomalainen A. Modified Atkins diet induces subacute selective ragged-red-fiber lysis in mitochondrial myopathy patients. EMBO Mol Med. 2016 Nov 2;8(11):1234-1247. doi: 10.15252/emmm.201606592. Print 2016 Nov.
- Background: PubMed 21820356Suomalainen A, Elo JM, Pietilainen KH, Hakonen AH, Sevastianova K, Korpela M, Isohanni P, Marjavaara SK, Tyni T, Kiuru-Enari S, Pihko H, Darin N, Ounap K, Kluijtmans LA, Paetau A, Buzkova J, Bindoff LA, Annunen-Rasila J, Uusimaa J, Rissanen A, Yki-Jarvinen H, Hirano M, Tulinius M, Smeitink J, Tyynismaa H. FGF-21 as a biomarker for muscle-manifesting mitochondrial respiratory chain deficiencies: a diagnostic study. Lancet Neurol. 2011 Sep;10(9):806-18. doi: 10.1016/S1474-4422(11)70155-7. Epub 2011 Aug 3.
- Background: PubMed 26924217Nikkanen J, Forsstrom S, Euro L, Paetau I, Kohnz RA, Wang L, Chilov D, Viinamaki J, Roivainen A, Marjamaki P, Liljenback H, Ahola S, Buzkova J, Terzioglu M, Khan NA, Pirnes-Karhu S, Paetau A, Lonnqvist T, Sajantila A, Isohanni P, Tyynismaa H, Nomura DK, Battersby BJ, Velagapudi V, Carroll CJ, Suomalainen A. Mitochondrial DNA Replication Defects Disturb Cellular dNTP Pools and Remodel One-Carbon Metabolism. Cell Metab. 2016 Apr 12;23(4):635-48. doi: 10.1016/j.cmet.2016.01.019. Epub 2016 Feb 25.
- Background: PubMed 28768179Khan NA, Nikkanen J, Yatsuga S, Jackson C, Wang L, Pradhan S, Kivela R, Pessia A, Velagapudi V, Suomalainen A. mTORC1 Regulates Mitochondrial Integrated Stress Response and Mitochondrial Myopathy Progression. Cell Metab. 2017 Aug 1;26(2):419-428.e5. doi: 10.1016/j.cmet.2017.07.007.
- Derived from this study: PubMed 32386566Pirinen E, Auranen M, Khan NA, Brilhante V, Urho N, Pessia A, Hakkarainen A, Kuula J, Heinonen U, Schmidt MS, Haimilahti K, Piirila P, Lundbom N, Taskinen MR, Brenner C, Velagapudi V, Pietilainen KH, Suomalainen A. Niacin Cures Systemic NAD+ Deficiency and Improves Muscle Performance in Adult-Onset Mitochondrial Myopathy. Cell Metab. 2020 Jun 2;31(6):1078-1090.e5. doi: 10.1016/j.cmet.2020.04.008. Epub 2020 May 7.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Anu Suomalainen Wartiovaara, MD,PhD principal investigator
Research Programs Unit, University of Helsinki, Helsinki, Finland
Questions about this trial
What is this clinical trial studying?
A study testing Niacin in people with Mitochondrial Myopathies, run by University of Helsinki.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 11 May 2023. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
NAD+ and related metabolite levels in blood and muscle (time frame: Baseline, 4 months and 10 months). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT03973203, which also lists 12 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 May 2023.