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Knee OsteoarthritisNCT07494838

IMAGES: Identifying Metabolic Imaging Association With Genicular Artery Embolization Success

A study testing Embolization in people with Knee Osteoarthritis and Knee Discomfort, run by Lucas R. Cusumano, MD at 1 site in United States.

Not yet recruiting

Opening soon. The study is approved but enrolment has not started yet. Sites may already take enquiries.

Sites and contacts
Official record
Search all trials

Trial summary

Several clinical trials on genicular artery embolization (GAE) show significant clinical benefit for the majority of patients. However, a proportion of patients do not benefit from GAE, and responses vary across individual patients. Read more about this study

Who is it for?
Ages 40 years and older
What is being tested?
Embolization
Type of treatment
Medical device
Could I receive a placebo?
No, everyone receives an active treatment
How many people
25 participants
Where
1 siteUnited States
Study dates
30 Dec 2026to 30 Jun 2027
Phase
Interventional
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 40 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Provided informed consent
  • Age ≥ 40 years
  • Ineligibility for or refusal of surgical management
  • Moderate-severe knee pain as determined by visual analog scale > 5 out of 10
  • Osteoarthritis based on X-ray. Kellgren-Lawrence score > 2 based on radiograph completed within 3 months of procedure date
  • Resistant/failed some form of conservative treatment (e.g. NSAIDS/physical therapy/steroid joint injection/hyaluronic acid joint injection) for at least 3 months
  • Able to comply with all treatments and protocol follow-up visits

Who cannot join

  • Mild knee pain as determined by visual analog scale < 5 out of 10
  • OA on knee radiograph resulting in greater than 20 degree varus or valgus angulation
  • Moderate loss of kidney function, define as estimated glomerular filtration rate of less than 45 mL/min.
  • Significant arterial atherosclerosis that would limit selective angiography
  • History of fibromyalgia, autoimmune, or inflammatory disorder
  • History of any lumbar spine surgery, spine injections, or radicular pain in the extremity believed to originate from the spine
Show all 13Show fewer
  • Allergy to iodinated contrast agents
  • Active infection or malignancy
  • Recent (within 12 months) or active cigarette use
  • Prior total or partial knee replacement in the subject knee
  • Active pregnancy
  • Uncorrectable bleeding diathesis
  • Presence of pacemakers, aneurysm clips, neurostimulators, or any other metal implant not compatible with PET/MRI

Trial locations and contacts

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

Lucas Cusumano, MD contact

United States1 site
  • University of California, Los Angeles

    Los Angeles, California, 90095

    Renato Escobar, (310) 956-6161, raescobar@mednet.ucla.edu

    Saima Chaabane, PhD, SChabaane@mednet.ucla.edu

Other trials in United States

About this study

Several clinical trials on genicular artery embolization (GAE) show significant clinical benefit for the majority of patients. However, a proportion of patients do not benefit from GAE, and responses vary across individual patients. Changes in metabolic activity on non-invasive imaging may correlate with improvement in symptoms of knee osteoarthritis. This study will assess changes in metabolic uptake on a hybrid positron emission tomography/magnetic resonance imaging (PET/MRI) system in subjects undergoing GAE.

Being tested
Embolization
Keywords
GAE
Medical subject headings
Osteoarthritis, Knee

What participants receive

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

  • EmbolizationDevice

    Genicular artery embolization

Study groups in NCT07494838
Study groupRoleWhat they receive
TreatmentOtherTreatment with GAE
Receives: Device: Embolization

What is being measured

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

  1. Compare metabolic activity

    To compare change in metabolic activity detected by PET/MRI as defined as percentage change in maximum standardized uptake value (SUVmax) and incidence of clinical response in patients undergoing GAE as defined as a 50% reduction in Western Ontario and McMaster Universities Arthritis Index (WOMAC).

    Measured: Screening, Month 6

Secondary outcomes (6)
  1. Associate changes in metabolic activity detected by PET

    To compare change in metabolic activity detected by PET/MRI as defined as percentage change in maximum standardized uptake value (SUVmax) and change of pain over time defined as percent change in Western Ontario and McMaster Universities Arthritis Index (WOMAC).

    Measured: Screening, Month 6

  2. Assess osseous metabolic abnormalities correlation with osseous abnormalities and cartilage degeneration

    To compare spatial association between MRI Osteoarthritis Knee Score (MOAKS) defined structural abnormalities and metabolic activity. For each subregion, MOAKS scores (cartilage loss and BML size) are graded semi-quantitatively (0 to 3, with higher score representing worse disease) and paired with corresponding standardized uptake value (SUVmax) values derived from co-registered PET data.

    Measured: Screening, Month 6

  3. Safety of GAE

    Outcome measure: Number of Participants Experiencing Treatment-related Adverse Events, as a Measure of Safety

    Measurement description: Treatment-related adverse events from genicular artery embolization during the study period

    Measured: Treatment, Month 3, Month 6, Month 12

  4. Change From Baseline in Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) as a Measure of Treatment Efficacy

    The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) is a self-administered questionnaire consisting of 24 items divided into 3 subscales. Each item is scored on a scale of 0-4, which correspond to: None (0), Mild (1), Moderate (2), Severe (3), and Extreme (4). With a total possible range of 0-96, higher scores indicate worse pain, stiffness, and functional limitations.

    Pain (5 items, possible range 0-20): during walking, using stairs, in bed, sitting or lying, and standing upright Stiffness (2 items, possible range 0-8): after first waking and later in the day Physical Function (17 items, possible range 0-68): using stairs, rising from sitting, standing, bending, walking, getting in / out of a car, shopping, putting on / taking off socks, rising from bed, lying in bed, getting in / out of bath, sitting, getting on / off toilet, heavy domestic duties, light domestic duties.

    Measured: Screen, Month 3, Month 6, Month 12

  5. Change From Baseline in Visual Analog Scale (VAS) as a Measure of Treatment Efficacy

    The patient-reported severity of knee pain was quantified using a visual analog scale (VAS) score ranging from 0 (indicating no pain) through 10 (indicating the worst pain imaginable).

    Measured: Screen, Month 3, Month 6, Month 12

  6. Assess KOOS5

    Change From Baseline in Knee injury and Osteoarthritis Outcome Score, 5th subscale (KOOS5) as a Measure of Treatment Efficacy

    KOOS consists of 5 subscales; Pain, other Symptoms, Function in daily living (ADL), Function in sport and recreation (Sport/Rec) and knee related Quality of life (QOL). The previous week is the time period considered when answering the questions. Standardized answer options are given (5 Likert boxes) and each question is assigned a score from 0 to 4. A normalized score (100 indicating no symptoms and 0 indicating extreme symptoms) is calculated for each subscale. Each subscale is meant to be scored separately. In this protocol, the 5th subscale (KOOS5) will be used, which measures knee-related quality of life.

    Measured: Screen, Month 3, Month 6, Month 12

Timeline

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

  1. First posted27 Mar 2026
  2. Study start30 Dec 2026 (estimated)
  3. Primary completion30 Jun 2027 (estimated)
  4. Study completion30 Jun 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
Interventional
Phase
Phase N/A
Primary purpose
Diagnosis
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
25 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07494838
Sponsor's protocol ID
25-2531
Status last verified
Mar 2026
First submitted
8 Mar 2026
Last updated
21 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
Yes
Individual data sharing
No

Publications

  • Akira S, Takeda K. Toll-like receptor signalling. Nat Rev Immunol. 2004 Jul;4(7):499-511. doi: 10.1038/nri1391. No abstract available.

    PubMed 15229469
  • Ashraf S, Wibberley H, Mapp PI, Hill R, Wilson D, Walsh DA. Increased vascular penetration and nerve growth in the meniscus: a potential source of pain in osteoarthritis. Ann Rheum Dis. 2011 Mar;70(3):523-9. doi: 10.1136/ard.2010.137844. Epub 2010 Nov 15.

    PubMed 21081524
  • Bagla S, Piechowiak R, Hartman T, Orlando J, Del Gaizo D, Isaacson A. Genicular Artery Embolization for the Treatment of Knee Pain Secondary to Osteoarthritis. J Vasc Interv Radiol. 2020 Jul;31(7):1096-1102. doi: 10.1016/j.jvir.2019.09.018. Epub 2019 Dec 16.

    PubMed 31837946
  • Bagla S, Piechowiak R, Sajan A, Orlando J, Hartman T, Isaacson A. Multicenter Randomized Sham Controlled Study of Genicular Artery Embolization for Knee Pain Secondary to Osteoarthritis. J Vasc Interv Radiol. 2022 Jan;33(1):2-10.e2. doi: 10.1016/j.jvir.2021.09.019. Epub 2021 Oct 2.

    PubMed 34610422
  • Berenbaum F. Osteoarthritis as an inflammatory disease (osteoarthritis is not osteoarthrosis!). Osteoarthritis Cartilage. 2013 Jan;21(1):16-21. doi: 10.1016/j.joca.2012.11.012. Epub 2012 Nov 27.

    PubMed 23194896
  • Bonomo G, Pedicini V, Monfardini L, Della Vigna P, Poretti D, Orgera G, Orsi F. Bland embolization in patients with unresectable hepatocellular carcinoma using precise, tightly size-calibrated, anti-inflammatory microparticles: first clinical experience and one-year follow-up. Cardiovasc Intervent Radiol. 2010 Jun;33(3):552-9. doi: 10.1007/s00270-009-9752-y. Epub 2009 Dec 3.

    PubMed 19957182
  • Chan WP, Lang P, Stevens MP, Sack K, Majumdar S, Stoller DW, Basch C, Genant HK. Osteoarthritis of the knee: comparison of radiography, CT, and MR imaging to assess extent and severity. AJR Am J Roentgenol. 1991 Oct;157(4):799-806. doi: 10.2214/ajr.157.4.1892040.

    PubMed 1892040
  • Chandran V, Abji F, Perruccio AV, Gandhi R, Li S, Cook RJ, Gladman DD. Serum-based soluble markers differentiate psoriatic arthritis from osteoarthritis. Ann Rheum Dis. 2019 Jun;78(6):796-801. doi: 10.1136/annrheumdis-2018-214737. Epub 2019 Mar 25.

    PubMed 30910989
  • Cheng H, Hao B, Sun J, Yin M. C-Terminal Cross-Linked Telopeptides of Type II Collagen as Biomarker for Radiological Knee Osteoarthritis: A Meta-Analysis. Cartilage. 2020 Oct;11(4):512-520. doi: 10.1177/1947603518798884. Epub 2018 Sep 15.

    PubMed 30221987
  • Collins NJ, Misra D, Felson DT, Crossley KM, Roos EM. Measures of knee function: International Knee Documentation Committee (IKDC) Subjective Knee Evaluation Form, Knee Injury and Osteoarthritis Outcome Score (KOOS), Knee Injury and Osteoarthritis Outcome Score Physical Function Short Form (KOOS-PS), Knee Outcome Survey Activities of Daily Living Scale (KOS-ADL), Lysholm Knee Scoring Scale, Oxford Knee Score (OKS), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), Activity Rating Scale (ARS), and Tegner Activity Score (TAS). Arthritis Care Res (Hoboken). 2011 Nov;63 Suppl 11(0 11):S208-28. doi: 10.1002/acr.20632. No abstract available.

    PubMed 22588746
  • Conde J, Scotece M, Gomez R, Lopez V, Gomez-Reino JJ, Gualillo O. Adipokines and osteoarthritis: novel molecules involved in the pathogenesis and progression of disease. Arthritis. 2011;2011:203901. doi: 10.1155/2011/203901. Epub 2011 Aug 18.

    PubMed 22046513
  • Cross M, Smith E, Hoy D, Nolte S, Ackerman I, Fransen M, Bridgett L, Williams S, Guillemin F, Hill CL, Laslett LL, Jones G, Cicuttini F, Osborne R, Vos T, Buchbinder R, Woolf A, March L. The global burden of hip and knee osteoarthritis: estimates from the global burden of disease 2010 study. Ann Rheum Dis. 2014 Jul;73(7):1323-30. doi: 10.1136/annrheumdis-2013-204763. Epub 2014 Feb 19.

    PubMed 24553908
  • Deyle GD, Allen CS, Allison SC, Gill NW, Hando BR, Petersen EJ, Dusenberry DI, Rhon DI. Physical Therapy versus Glucocorticoid Injection for Osteoarthritis of the Knee. N Engl J Med. 2020 Apr 9;382(15):1420-1429. doi: 10.1056/NEJMoa1905877.

    PubMed 32268027
  • Dominick KL, Ahern FM, Gold CH, Heller DA. Health-related quality of life and health service use among older adults with osteoarthritis. Arthritis Rheum. 2004 Jun 15;51(3):326-31. doi: 10.1002/art.20390.

    PubMed 15188315
  • Greco G, Cascella T, Facciorusso A, Nani R, Lanocita R, Morosi C, Vaiani M, Calareso G, Greco FG, Ragnanese A, Bongini MA, Marchiano AV, Mazzaferro V, Spreafico C. Transarterial chemoembolization using 40 microm drug eluting beads for hepatocellular carcinoma. World J Radiol. 2017 May 28;9(5):245-252. doi: 10.4329/wjr.v9.i5.245.

    PubMed 28634515

Questions about this trial

What is this clinical trial studying?

A study testing Embolization in people with Knee Osteoarthritis and Knee Discomfort, run by Lucas R. Cusumano, MD 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?

The sponsor lists 7 inclusion and 13 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: opening soon, as of the sponsor's last update on 21 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 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?

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 Renato Escobar (310-956-6161, raescobar@mednet.ucla.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Compare metabolic activity (time frame: Screening, Month 6). 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 NCT07494838, which also lists 47 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 21 Sep 2026.

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