Complex Regional Pain SyndromesA2MNCT04066933
Forms of Cervical Brachial Syndrome Treated With Plasma Concentrate Enriched for A2M
An observational study of Complex Regional Pain Syndromes and Neuralgia, run by Neurological Associates of West Los Angeles at 1 site in United States.
Trial summary
Alpha 2 macroglobulin (A2M) is a plasma protein that acts as a molecular trap for inflammatory factors such as tumor necrosis factor (TNF). After plasma is enriched for A2M, it may be injected for treating chronic inflammation. Read more about this study
- Who is it for?
- Ages 23 to 77 years
- Conditions the study is for
- Complex Regional Pain Syndromes, Neuralgia, Thoracic Outlet Neurologic Syndrome
- What is being tested?
- A2M enriched plasma
- Type of treatment
- Injection or infusion
- How many people
- 60 participants
- Where
- 1 siteUnited States
- Study dates
- 24 Sep 2018to Dec 2023
- Phase
- Observational
- 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 23 to 77 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: 56 patients (43 women, 13 men) with an age range of 23 to 77 years old who had undergone the outlined procedure were included in this chart review.
Inclusionary Criteria:
- All patients had daily disabling cervical brachial pain that was continuously present for at least six months.
- After examination by one or both of the authors, patients who were diagnosed as having a condition related to musculotendinous pain (MTPS), neuropathic Thoracic Outlet Syndrome (NTOS), or Complex Regional Pain Syndrome (CRPS) qualified for treatment and inclusion in the chart review.
Exclusionary Criteria:
- N/A
- (retrospective analysis of clinical treatment)
Trial locations and contacts
1 site in 1 country.
United States1 site
Neurological Associates of West Los Angeles
Santa Monica, California, 90403
About this study
Official title: Neurogenic Thoracic Outlet Syndrome and Other Forms of Cervical Brachial Syndrome Treated With Plasma Concentrate Enriched for Alpha 2 Macroglobulin
Alpha 2 macroglobulin (A2M) is a plasma protein that acts as a molecular trap for inflammatory factors such as tumor necrosis factor (TNF). After plasma is enriched for A2M, it may be injected for treating chronic inflammation. Plasma enriched for A2M may be considered as a possible injectable agent to counteract inflammation that may occur with a cervicobrachial pain syndrome. This study reports on an experiencing using A2M to treat cervicobrachial syndrome which was predominant for either musculotendinous or neuralgic features.
Read the detailed description
Regional pain in the neck, shoulder and arm is a common problem when there is exposure to repetitive work with a prevalence of about fifty percent. In the absence of a widespread pain conditions, and when cervical radiculopathy is ruled out with appropriate imaging, myalgia, tendinopathy or neurogenic sources of pain may predominate in a given case.
Myalgia (MTPS) may be characterized by muscles that are tight and tender to palpation and where there may be radiation of pain down the limb. A twitch may be elicited with stimulation of affected muscle. Numerous treatments for myalgia have been proposed with variable or incomplete success including local anesthetic injections, botulinum chemodenervation and platelet rich plasma injections.
Neuralgic complaints may be caused by chronic compression in the interscalene triangle as in Thoracic Outlet Syndrome (NTOS) and other patients may have injury from sudden stretch, electrocution, inflammatory diseases, penetrating wounds or acute or chronic post-operative conditions. Botulinum chemodenervation and surgical decompression has been applied for treating nerve compression due to Thoracic Outlet Syndrome with partial success. [9-13] Chemodenervation tends to be transient in effect and surgery may have significant complications.
Previous reports have demonstrated relatively poor outcomes with targeted treatments when there is a coexistence of conditions characterized by increased sensitivity as in complex regional pain syndrome (CRPS) or fibromyalgia. In the present retrospective review, it was anticipated that patients with CRPS may not respond as well to targeted treatment so that they were evaluated separately from patients with NTOS along.
Because existing therapies for myofascial and neuralgic forms of cervicobrachial pain may have unsatisfactory outcomes, alternative therapies may be considered, particularly, for individuals who have failed to respond. Contemporary conceptualizations of chronic pain mechanisms include the contribution of inflammatory factors. Mindful of these considerations, locally targeted anti-inflammatory administrations may be thought to play a potential role in treatment of cervicobrachial pain.
Alpha 2 macroglobulin is a plasma protein that acts as a molecular trap for inflammatory factors such as tumor necrosis factor, TNF. After plasma is enriched for A2M, it may be injected for treating chronic inflammation. Plasma enriched for A2M may be considered as a possible injectable agent to counteract inflammation that may occur with a cervicobrachial pain syndrome. The present paper reports on an experience using A2M for treating cervicobrachial syndrome which was predominant for either musculotendinous or neuralgic features.
- Being tested
- A2M enriched plasma
- Keywords
- Alpha 2 macroglobulin
- Medical subject headings
- Complex Regional Pain Syndromes, Neuralgia, Thoracic Outlet Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
A2M enriched plasmaCombination product
Also called A2M-PPP
Plasma enriched for alpha2macroglobulin (A2M-PPP) was produced by a centrifugation and filtration process developed by Cytonics Corporation. Initially, 7 milliliters of Anticoagulant Citrate Dextrose Solution A, ubiquitous surface protein (USP) was drawn into a 60 cc syringe and then an additional 38 cc of autologous blood was drawn up through an antecubital vein. Two syringes were prepared in this manner and then centrifuged at 4000 rpm (1280G) for 4 minutes. The supernatant plasma fraction was then transferred to a roller pump system that circulates the fluid through a proprietary filter having a high molecular weight cutoff designed to trap larger molecules including alpha 2 macroglobulin (720 kDa).
What is being measured
The primary outcome is the main question the study is designed to answer.
Brief Pain Inventory (BPI)
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points.
Measured: Baseline
Patient Global Impression of Change Scale (PGIC)
Qualitative assessment of meaningful change obtained by a brief interview to estimate patients' overall perceived benefit of study procedures. The PGIC is structured as a 7-item scale ranging from 1 'very much improved' to 7 'very much worse.' Scores of 1 and 2 reflected notable subjective perception of benefit.
Measured: 3 months
Secondary outcomes (3)
Brief Pain Inventory (BPI)
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points. A clinical improvement is considered a decrease in BPI overall composite score by at least 30% from baseline.
Measured: 1 month
Brief Pain Inventory (BPI)
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points. A clinical improvement is considered a decrease in BPI overall composite score by at least 30% from baseline.
Measured: 3 months
Brief Pain Inventory (BPI)
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points. A clinical improvement is considered a decrease in BPI overall composite score by at least 30% from baseline.
Measured: 6 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Aug 2019
- Study start24 Sep 2018
- Primary completionDec 2023 (estimated)
- Study completionDec 2023 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (16)Papers the sponsor has linked to this study.
- Other trials for Complex Regional Pain SyndromesStudies 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
- Observational
- Observational model
- Cohort
- Time perspective
- Other
- Enrolment
- 60 participants (actual)
Sponsor and investigators
- Lead sponsor
- Neurological Associates of West Los Angeles
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Sheldon Jordan, MD, FAAN, Principal investigator, Neurological Associates of West Los Angeles
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04066933
- Sponsor's protocol ID
- 33237/1
- Acronym
- A2M
- Status last verified
- Sep 2022
- First submitted
- 19 Aug 2019
- Last updated
- 28 Sep 2022
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Waersted M, Hanvold TN, Veiersted KB. Computer work and musculoskeletal disorders of the neck and upper extremity: a systematic review. BMC Musculoskelet Disord. 2010 Apr 29;11:79. doi: 10.1186/1471-2474-11-79.
PubMed 20429925Pascarelli EF, Hsu YP. Understanding work-related upper extremity disorders: clinical findings in 485 computer users, musicians, and others. J Occup Rehabil. 2001 Mar;11(1):1-21. doi: 10.1023/a:1016647923501.
PubMed 11706773Simons DG. The nature of myofascial trigger points. Clin J Pain. 1995 Mar;11(1):83-4. No abstract available.
PubMed 7787341Lavelle ED, Lavelle W, Smith HS. Myofascial trigger points. Med Clin North Am. 2007 Mar;91(2):229-39. doi: 10.1016/j.mcna.2006.12.004.
PubMed 17321283Cartagena-Sevilla J, Garcia-Fernandez MR, Vicente-Villena JP. Analgesic Effect of Botulinum Toxin A in Myofascial Pain Syndrome Patients Previously Treated with Local Infiltration of Anesthetic and Steroids. J Pain Palliat Care Pharmacother. 2016 Dec;30(4):269-275. doi: 10.1080/15360288.2016.1231742. Epub 2016 Nov 1.
PubMed 27802066Soares A, Andriolo RB, Atallah AN, da Silva EM. Botulinum toxin for myofascial pain syndromes in adults. Cochrane Database Syst Rev. 2014 Jul 25;2014(7):CD007533. doi: 10.1002/14651858.CD007533.pub3.
PubMed 25062018Tsikopoulos K, Tsikopoulos I, Simeonidis E, Papathanasiou E, Haidich AB, Anastasopoulos N, Natsis K. The clinical impact of platelet-rich plasma on tendinopathy compared to placebo or dry needling injections: A meta-analysis. Phys Ther Sport. 2016 Jan;17:87-94. doi: 10.1016/j.ptsp.2015.06.003. Epub 2015 Jun 18.
PubMed 26621224Jordan SE, Ahn SS, Gelabert HA. Combining ultrasonography and electromyography for botulinum chemodenervation treatment of thoracic outlet syndrome: comparison with fluoroscopy and electromyography guidance. Pain Physician. 2007 Jul;10(4):541-6.
PubMed 17660852Jordan SE, Ahn SS, Gelabert HA. Differentiation of thoracic outlet syndrome from treatment-resistant cervical brachial pain syndromes: development and utilization of a questionnaire, clinical examination and ultrasound evaluation. Pain Physician. 2007 May;10(3):441-52.
PubMed 17525778Christo PJ, Christo DK, Carinci AJ, Freischlag JA. Single CT-guided chemodenervation of the anterior scalene muscle with botulinum toxin for neurogenic thoracic outlet syndrome. Pain Med. 2010 Apr;11(4):504-11. doi: 10.1111/j.1526-4637.2010.00814.x. Epub 2010 Mar 1.
PubMed 20202146Torriani M, Gupta R, Donahue DM. Botulinum toxin injection in neurogenic thoracic outlet syndrome: results and experience using a ultrasound-guided approach. Skeletal Radiol. 2010 Oct;39(10):973-80. doi: 10.1007/s00256-010-0897-1. Epub 2010 Feb 26.
PubMed 20186413Thompson RW, Petrinec D. Surgical treatment of thoracic outlet compression syndromes: diagnostic considerations and transaxillary first rib resection. Ann Vasc Surg. 1997 May;11(3):315-23. doi: 10.1007/s100169900053. No abstract available.
PubMed 9140610Cuellar JM, Cuellar VG, Scuderi GJ. alpha2-Macroglobulin: Autologous Protease Inhibition Technology. Phys Med Rehabil Clin N Am. 2016 Nov;27(4):909-918. doi: 10.1016/j.pmr.2016.06.008.
PubMed 27788907Wang S, Wei X, Zhou J, Zhang J, Li K, Chen Q, Terek R, Fleming BC, Goldring MB, Ehrlich MG, Zhang G, Wei L. Identification of alpha2-macroglobulin as a master inhibitor of cartilage-degrading factors that attenuates the progression of posttraumatic osteoarthritis. Arthritis Rheumatol. 2014 Jul;66(7):1843-53. doi: 10.1002/art.38576.
PubMed 24578232Pasquale, X.M., Jason, M.C., Gaetano, J.S., Intradiscal injection of an Autologous Alpha-2-Macroglobulin (A2M) Concentrate Alleviates Back Pain in FAC-Positive Patients. Ortho and Rheum, 2017. 4(2).
Study at a glance
From the registry record, last updated by the sponsor on 28 Sep 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Neurogenic Thoracic Outlet Syndrome and Other Forms of Cervical Brachial Syndrome Treated With Plasma Concentrate Enriched for Alpha 2 Macroglobulin
- ClinicalTrials.gov ID
- NCT04066933
- Acronym / sponsor ID
- A2M / 33237/1
- Keywords
- Alpha 2 macroglobulin
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 60 participants (actual)
- Lead sponsor
- Neurological Associates of West Los AngelesUniversity, hospital or other
- Study start
- 24 Sep 2018 (actual)
- Primary completion
- Dec 2023 (estimated)
- Study completion
- Dec 2023 (estimated)
- First posted
- 26 Aug 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.
Alpha 2 macroglobulin (A2M) is a plasma protein that acts as a molecular trap for inflammatory factors such as tumor necrosis factor (TNF). After plasma is enriched for A2M, it may be injected for treating chronic inflammation. Plasma enriched for A2M may be considered as a possible injectable agent to counteract inflammation that may occur with a cervicobrachial pain syndrome. This study reports on an experiencing using A2M to treat cervicobrachial syndrome which was predominant for either musculotendinous or neuralgic features.
Detailed description
Regional pain in the neck, shoulder and arm is a common problem when there is exposure to repetitive work with a prevalence of about fifty percent. In the absence of a widespread pain conditions, and when cervical radiculopathy is ruled out with appropriate imaging, myalgia, tendinopathy or neurogenic sources of pain may predominate in a given case.
Myalgia (MTPS) may be characterized by muscles that are tight and tender to palpation and where there may be radiation of pain down the limb. A twitch may be elicited with stimulation of affected muscle. Numerous treatments for myalgia have been proposed with variable or incomplete success including local anesthetic injections, botulinum chemodenervation and platelet rich plasma injections.
Neuralgic complaints may be caused by chronic compression in the interscalene triangle as in Thoracic Outlet Syndrome (NTOS) and other patients may have injury from sudden stretch, electrocution, inflammatory diseases, penetrating wounds or acute or chronic post-operative conditions. Botulinum chemodenervation and surgical decompression has been applied for treating nerve compression due to Thoracic Outlet Syndrome with partial success. [9-13] Chemodenervation tends to be transient in effect and surgery may have significant complications.
Previous reports have demonstrated relatively poor outcomes with targeted treatments when there is a coexistence of conditions characterized by increased sensitivity as in complex regional pain syndrome (CRPS) or fibromyalgia. In the present retrospective review, it was anticipated that patients with CRPS may not respond as well to targeted treatment so that they were evaluated separately from patients with NTOS along.
Because existing therapies for myofascial and neuralgic forms of cervicobrachial pain may have unsatisfactory outcomes, alternative therapies may be considered, particularly, for individuals who have failed to respond. Contemporary conceptualizations of chronic pain mechanisms include the contribution of inflammatory factors. Mindful of these considerations, locally targeted anti-inflammatory administrations may be thought to play a potential role in treatment of cervicobrachial pain.
Alpha 2 macroglobulin is a plasma protein that acts as a molecular trap for inflammatory factors such as tumor necrosis factor, TNF. After plasma is enriched for A2M, it may be injected for treating chronic inflammation. Plasma enriched for A2M may be considered as a possible injectable agent to counteract inflammation that may occur with a cervicobrachial pain syndrome. The present paper reports on an experience using A2M for treating cervicobrachial syndrome which was predominant for either musculotendinous or neuralgic features.
Study design
- Observational model
- Cohort
- Time perspective
- Other
Who may qualify
- Ages
- 23 to 77 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- 56 patients (43 women, 13 men) with an age range of 23 to 77 years old who had undergone the outlined procedure were included in this chart review.
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 |
|---|---|---|
| A2M enriched plasmaAlso: A2M-PPPPlasma enriched for alpha2macroglobulin (A2M-PPP) was produced by a centrifugation and filtration process developed by Cytonics Corporation. Initially, 7 milliliters of Anticoagulant Citrate Dextrose Solution A, ubiquitous surface protein (USP) was drawn into a 60 cc syringe and then an additional 38 cc of autologous blood was drawn up through an antecubital vein. Two syringes were prepared in this manner and then centrifuged at 4000 rpm (1280G) for 4 minutes. The supernatant plasma fraction was then transferred to a roller pump system that circulates the fluid through a proprietary filter having a high molecular weight cutoff designed to trap larger molecules including alpha 2 macroglobulin (720 kDa). | Combination product | – |
Primary outcome
Brief Pain Inventory (BPI)
Time frame: Baseline
Self-report measure containing a composite pain score and functional interference score. The pain subscale contains 4 questions, each with answers ranging from 0 'no pain' to 10 'pain as bad as you can imagine.' Total possible score for the pain subscale is 40 points. The functional/interference subscale contains 7 questions, with each answer ranging from 0 'does not interfere' to 10 'completely interferes.' The maximum possible score for the interference subscale is 70 points. The total overall composite BPI score is out of 100 maximum points.
Patient Global Impression of Change Scale (PGIC)
Time frame: 3 months
Qualitative assessment of meaningful change obtained by a brief interview to estimate patients' overall perceived benefit of study procedures. The PGIC is structured as a 7-item scale ranging from 1 'very much improved' to 7 'very much worse.' Scores of 1 and 2 reflected notable subjective perception of benefit.
3 secondary outcomes
Brief Pain Inventory (BPI)
Time frame: 1 month
Brief Pain Inventory (BPI)
Time frame: 3 months
Brief Pain Inventory (BPI)
Time frame: 6 months
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 28 Sep 2022.
- Background: PubMed 20429925Waersted M, Hanvold TN, Veiersted KB. Computer work and musculoskeletal disorders of the neck and upper extremity: a systematic review. BMC Musculoskelet Disord. 2010 Apr 29;11:79. doi: 10.1186/1471-2474-11-79.
- Background: PubMed 11706773Pascarelli EF, Hsu YP. Understanding work-related upper extremity disorders: clinical findings in 485 computer users, musicians, and others. J Occup Rehabil. 2001 Mar;11(1):1-21. doi: 10.1023/a:1016647923501.
- Background: PubMed 7787341Simons DG. The nature of myofascial trigger points. Clin J Pain. 1995 Mar;11(1):83-4. No abstract available.
- Background: PubMed 17321283Lavelle ED, Lavelle W, Smith HS. Myofascial trigger points. Med Clin North Am. 2007 Mar;91(2):229-39. doi: 10.1016/j.mcna.2006.12.004.
- Background: PubMed 27802066Cartagena-Sevilla J, Garcia-Fernandez MR, Vicente-Villena JP. Analgesic Effect of Botulinum Toxin A in Myofascial Pain Syndrome Patients Previously Treated with Local Infiltration of Anesthetic and Steroids. J Pain Palliat Care Pharmacother. 2016 Dec;30(4):269-275. doi: 10.1080/15360288.2016.1231742. Epub 2016 Nov 1.
- Background: PubMed 25062018Soares A, Andriolo RB, Atallah AN, da Silva EM. Botulinum toxin for myofascial pain syndromes in adults. Cochrane Database Syst Rev. 2014 Jul 25;2014(7):CD007533. doi: 10.1002/14651858.CD007533.pub3.
- Background: PubMed 26621224Tsikopoulos K, Tsikopoulos I, Simeonidis E, Papathanasiou E, Haidich AB, Anastasopoulos N, Natsis K. The clinical impact of platelet-rich plasma on tendinopathy compared to placebo or dry needling injections: A meta-analysis. Phys Ther Sport. 2016 Jan;17:87-94. doi: 10.1016/j.ptsp.2015.06.003. Epub 2015 Jun 18.
- Background: PubMed 17660852Jordan SE, Ahn SS, Gelabert HA. Combining ultrasonography and electromyography for botulinum chemodenervation treatment of thoracic outlet syndrome: comparison with fluoroscopy and electromyography guidance. Pain Physician. 2007 Jul;10(4):541-6.
- Background: PubMed 17525778Jordan SE, Ahn SS, Gelabert HA. Differentiation of thoracic outlet syndrome from treatment-resistant cervical brachial pain syndromes: development and utilization of a questionnaire, clinical examination and ultrasound evaluation. Pain Physician. 2007 May;10(3):441-52.
- Background: PubMed 20202146Christo PJ, Christo DK, Carinci AJ, Freischlag JA. Single CT-guided chemodenervation of the anterior scalene muscle with botulinum toxin for neurogenic thoracic outlet syndrome. Pain Med. 2010 Apr;11(4):504-11. doi: 10.1111/j.1526-4637.2010.00814.x. Epub 2010 Mar 1.
- Background: PubMed 20186413Torriani M, Gupta R, Donahue DM. Botulinum toxin injection in neurogenic thoracic outlet syndrome: results and experience using a ultrasound-guided approach. Skeletal Radiol. 2010 Oct;39(10):973-80. doi: 10.1007/s00256-010-0897-1. Epub 2010 Feb 26.
- Background: PubMed 9140610Thompson RW, Petrinec D. Surgical treatment of thoracic outlet compression syndromes: diagnostic considerations and transaxillary first rib resection. Ann Vasc Surg. 1997 May;11(3):315-23. doi: 10.1007/s100169900053. No abstract available.
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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.
Sheldon Jordan, MD, FAAN principal investigator
Neurological Associates of West Los Angeles
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Complex Regional Pain Syndromes and Neuralgia, run by Neurological Associates of West Los Angeles at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
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: status not confirmed, as of the sponsor's last update on 28 Sep 2022. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
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?
Results are not available in the source record.
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?
Brief Pain Inventory (BPI) (time frame: Baseline). The study lists 2 primary outcomes in all. 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 NCT04066933, which also lists 16 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 28 Sep 2022.