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Chronic PainNCT06994988

ARPA-H Smart Band-Aid to Measure Chronic Pain in Women

An observational study of Chronic Pain, run by Northwestern University at 2 sites in United States.

Recruiting

Looking for participants now. Contact the study team or a site below to ask about taking part.

Sites and contacts
Official record
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Trial summary

The goal of this clinical trial is to test whether a minimally invasive microneedle patch, called the A-Band (Smart Band-aid), worn on the arm (monitoring key biomarkers in interstitial fluid) and a commercial smartwatch can accurately correlate with self-reported pain in women with chronic pain. Read more about this study

Who is it for?
Ages 18 years and older, women onlyHealthy volunteers can take part
Conditions the study is for
Chronic Pain
What is being tested?
A-Band (Smart Band-Aid), Empatica Smartwatch and Questionnaires: Hospital Anxiety & Depression Scale, Central Sensitization Inventory, Pain Catastrophizing Scale, Somatic Symptom Scale-8, Pain Self-Efficacy Questionnaire-10, Athens Insomnia Scale
How many people
115 participants
Where
2 sitesUnited States
Study dates
6 Jul 2026to 23 Apr 2027
Phase
Observational
Are there results?
Not yet: the study is under way

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 18 years and older
  • Women only
  • Healthy volunteers accepted
  • Adult, Older adult

Study population: Biological females with chronic pain and biological females without chronic pain

Who may be able to join

  • For chronic pain group:
  • Female, 18 years or older.
  • Diagnosis of chronic pain condition (e.g., fibromyalgia, chronic lower back pain) as determined by the Principal Investigator.
  • Ability to provide informed consent.
  • For healthy controls:
  • Female, 18 years or older.
Show all 10Show fewer
  • No history of chronic pain.
  • No significant or poorly controlled medical conditions as determined by the Principal Investigator and exclusion criteria.
  • No significant active, poorly controlled psychological conditions as determined by the Principal Investigator and exclusion criteria.
  • Ability to provide informed consent.

Who cannot join

  • Pregnant or breastfeeding women.
  • Substance abuse or psychiatric disorders that interfere with study participation.
  • Major medical conditions (such as severe cardiovascular, neurological, cancer or autoimmune diseases) or psychological conditions (e.g., active, poorly-controlled depression, anxiety disorder, PTSD, substance use disorder) that interfere with study participation.
  • Possibility of secondary financial gain from participation
  • Interventional pain treatment(s) within 6 weeks of baseline (injection, epidural, etc.)
  • Current opioid usage or usage within 2 weeks of baseline

Trial locations and contacts

2 sites in 1 country. Contact the study team or a site near you to ask about taking part.

United States2 sites, 2 recruiting
  • Walter Reed National Military Medical Center

    Bethesda, Maryland, 20814

    Miana Atkins, MPH, 240-688-1745, miana.atkins.ctr@usuhs.edu

    Not yet recruiting
  • Northwestern University Feinberg School of Medicine

    Chicago, Illinois, 60611

    Jordan Wood, BS, 312-695-0915, jordan.wood1@northwestern.edu

    Recruiting

Other trials in United States

About this study

Official title: Multi-modal Smart Band-Aid for AI-based Quantification of Pain

The goal of this clinical trial is to test whether a minimally invasive microneedle patch, called the A-Band (Smart Band-aid), worn on the arm (monitoring key biomarkers in interstitial fluid) and a commercial smartwatch can accurately correlate with self-reported pain in women with chronic pain. A secondary purpose of the study is to identify demographic and clinical variables impacting pain measurement.

The main questions that this study aims to answer are:

Read more
  • What is the correlation between AI-adjusted pain scores, based on biomarkers and validated tools, and self-reported pain scores?
  • What influence do demographic and clinical information have in the correlation of these pain scores?

Researchers will compare data from these tools with self-reported pain scores in women with chronic pain and healthy women.

Participants will:

  • Be a part of the study for approximately 8 days
  • Attend 2-3 in-person visits at the applicable clinical center over approximately one week
  • Wear a Smart Band-Aid (A-Band) at least twice per day for a week, with each application lasting up to 90 minutes
  • Complete questionnaires regarding medical history, pain information, mental health, sleep, and demographic data
  • Record daily pain scores
  • Wear a smartwatch for one week which will collect biophysical data (heart rate, skin response, etc.)
  • Collect daily saliva samples
  • Have blood drawn by medical staff at 2 in-person visits
Read the detailed description

This study proposes the collection of interstitial fluid (ISF) from participants using a microneedle patch. ISF is a natural fluid found between your cells that can inform us on your bodily readings and health. A microneedle patch is a safe alternative to standard fluid collection which uses tiny needles to collect the ISF. The patches consist of single-use, sterile (clean) microneedles created from biocompatible materials. These microneedles penetrate the outermost skin layer without causing significant discomfort, pain, or bleeding.

The A-Band is an investigational device and has not been approved for use by the Food and Drug Administration (FDA).

Conditions
Chronic Pain
Being tested
A-Band (Smart Band-Aid), Empatica Smartwatch, Questionnaires: Hospital Anxiety & Depression Scale, Central Sensitization Inventory, Pain Catastrophizing Scale, Somatic Symptom Scale-8, Pain Self-Efficacy Questionnaire-10, Athens Insomnia Scale
Keywords
Smart Band-Aid, A-Band, Chronic Pain, ARPA-H, AI and Chronic Pain, Objective measure, Biomarker
Medical subject headings
Chronic Pain

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • A-Band (Smart Band-Aid)Device

    The A-Band is a smart band-aid placed on the forearm or other designated site that collects interstitial fluid (ISF) from participants using a microneedle patch. ISF is a natural fluid found between your cells that can inform us on your bodily readings and health. A microneedle patch is a safe alternative to standard fluid collection which uses tiny needles to collect the ISF. The patches consist of single-use, sterile (clean) microneedles created from biocompatible materials. These microneedles penetrate the outermost skin layer without causing significant discomfort, pain, or bleeding.

  • Empatica SmartwatchCombination product

    A commercial smart band will be worn by participants for 22+ hours a day for approximately 7 days. The smart band collects biophysical data from the participant. This includes data on biomarkers, heart rate and heart rate variability, galvanic skin response, step count, and temperature fluctuations, among other biophysical data.

  • Questionnaires: Hospital Anxiety & Depression Scale, Central Sensitization Inventory, Pain Catastrophizing Scale, Somatic Symptom Scale-8, Pain Self-Efficacy Questionnaire-10, Athens Insomnia ScaleBehavioural

    HADS- measures anxiety and depression (0-21, higher scores signify greater pathology); CSI- measures central sensitization (0-100, higher scores signify greater central sensitization, PCS- measures catastrophizing (0-52, higher scores signify greater catastrophization), SSS-8- measures somatization (0-32, higher scores signify greater somatization), PSEQ-10- measures self-efficacy (0-60, with lower scores signifying low self-efficacy), AIS- measures sleep (0-28, with higher scores signifying greater sleep dysfunction)

Study groups in NCT06994988
Study groupRoleWhat they receive
Chronic pain patients85 female patients with chronic pain > 3 months duration
Receives: Device: A-Band (Smart Band-Aid); Combination Product: Empatica Smartwatch; Behavioral: Questionnaires: Hospital Anxiety & Depression Scale, Central Sensitization Inventory, Pain Catastrophizing Scale, Somatic Symptom Scale-8, Pain Self-Efficacy Questionnaire-10, Athens Insomnia Scale
Healthy control patients35 healthy control patients
Receives: Device: A-Band (Smart Band-Aid); Combination Product: Empatica Smartwatch; Behavioral: Questionnaires: Hospital Anxiety & Depression Scale, Central Sensitization Inventory, Pain Catastrophizing Scale, Somatic Symptom Scale-8, Pain Self-Efficacy Questionnaire-10, Athens Insomnia Scale

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Difference between patient-reported pain score and objective pain score as calculated by AI

    We will measure the difference between the patient-reported pain scores and AI-generated objective pain score in subgroups of chronic pain patients (e.g., nociplastic pain, neuropathic pain, nociceptive pain, mixed pain) and healthy controls (if they have acute pain).

    Measured: Days 0 thru 7, for 8 total days

Secondary outcomes (2)
  1. Pain Scores from Biochemical and Biophysical Measurements & Instruments Measured from Questionnaires (affective-motivational and cognitive components)

    Biomarker readings from interstitial fluid, blood serum, and a commercial smart band will be inserted into an AI machine learning algorithm and combined with the scores on the instruments measuring the affective and cognitive pain components to develop an "objective" pain score. The affective-motivational component will be determined by scores on the Hospital Anxiety \& Depression Scale, Somatic Symptom Scale-8 \& Athens Insomnia Scale. The cognitive-evaluative component will be determined by scores on the Pain Catastrophizing Scale, Pain Self-Efficacy Questionnaire-10 and Somatic Symptom Scale-8.

    Measured: From Day 0 thru Day 7, for 8 total days

  2. Patient-reported pain score

    Patient-reported pain scale on a 0-10 pain scale (Defense and Veterans Pain Rating Scale), recorded at least twice per day upon patch application.

    Measured: Days 0 thru 7, for 8 total days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted29 May 2025
  2. Study start6 Jul 2026
  3. Primary completion23 Apr 2027 (estimated)
  4. Study completion23 Apr 2027 (estimated)

Resources

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
Prospective
Enrolment
115 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06994988
Sponsor's protocol ID
STU00223452
Other IDs
FP00008853
Status last verified
Sep 2026
First submitted
20 May 2025
Last updated
14 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
Yes: IPD will be shared upon request with IRB approval.

Publications

  • Guo LL, Pfohl SR, Fries J, Johnson AEW, Posada J, Aftandilian C, Shah N, Sung L. Evaluation of domain generalization and adaptation on improving model robustness to temporal dataset shift in clinical medicine. Sci Rep. 2022 Feb 17;12(1):2726. doi: 10.1038/s41598-022-06484-1.

    PubMed 35177653
  • Wu Z, Yao H, Liebovitz D, Sun J. An iterative self-learning framework for medical domain generalization. Advances in Neural Information Processing Systems. 2024 Feb 13;36.

  • Strawbridge R, Young AH, Cleare AJ. Biomarkers for depression: recent insights, current challenges and future prospects. Neuropsychiatr Dis Treat. 2017 May 10;13:1245-1262. doi: 10.2147/NDT.S114542. eCollection 2017.

    PubMed 28546750
  • Yang J, Luo R, Yang L, Wang X, Huang Y. Microneedle-Integrated Sensors for Extraction of Skin Interstitial Fluid and Metabolic Analysis. Int J Mol Sci. 2023 Jun 8;24(12):9882. doi: 10.3390/ijms24129882.

    PubMed 37373027
  • Diaz MM, Caylor J, Strigo I, Lerman I, Henry B, Lopez E, Wallace MS, Ellis RJ, Simmons AN, Keltner JR. Toward Composite Pain Biomarkers of Neuropathic Pain-Focus on Peripheral Neuropathic Pain. Front Pain Res (Lausanne). 2022 May 11;3:869215. doi: 10.3389/fpain.2022.869215. eCollection 2022.

    PubMed 35634449
  • Telli H, Ozdemir C. Is nociplastic pain, a new pain category, associated with biochemical, hematological, and inflammatory parameters? Curr Med Res Opin. 2024 Mar;40(3):469-481. doi: 10.1080/03007995.2024.2304106. Epub 2024 Jan 22.

    PubMed 38204412
  • Eldabe S, Obara I, Panwar C, Caraway D. Biomarkers for Chronic Pain: Significance and Summary of Recent Advances. Pain Res Manag. 2022 Nov 7;2022:1940906. doi: 10.1155/2022/1940906. eCollection 2022.

    PubMed 36385904
  • Tracey I, Woolf CJ, Andrews NA. Composite Pain Biomarker Signatures for Objective Assessment and Effective Treatment. Neuron. 2019 Mar 6;101(5):783-800. doi: 10.1016/j.neuron.2019.02.019.

    PubMed 30844399

Questions about this trial

What is this clinical trial studying?

An observational study of Chronic Pain, run by Northwestern University at 2 sites 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?

The sponsor lists 10 inclusion and 6 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: looking for participants now, as of the sponsor's last update on 14 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites 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?

This study is still under way. Results are not available in the source record yet.

How can a doctor refer a patient or contact the research team?

Contact Jordan Wood, BS (312-695-0915, jordan.wood1@northwestern.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Difference between patient-reported pain score and objective pain score as calculated by AI (time frame: Days 0 thru 7, for 8 total days). 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 NCT06994988, which also lists 8 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 14 Sep 2026.

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