Hodgkin LymphomaPhase 3RADARNCT04685616
Brentuximab Vedotin in Early Stage Hodgkin Lymphoma
A Phase 3 study testing Involved site radiotherapy, Doxorubicin and Bleomycin in people with Hodgkin Lymphoma, run by University College, London at 72 sites in 12 countries.
Trial summary
RADAR is a multicentre, international, randomised, open-label phase III clinical trial composed of 2 trials running in parallel. Trial 1 will be led and sponsored by University College London (UCL) and conducted in Europe and Australia/New Zealand. Read more about this study
- Who is it for?
- Ages 16 to 69 years
- Conditions the study is for
- Hodgkin Lymphoma
- What is being tested?
- Involved site radiotherapy, Doxorubicin and Bleomycin
- Type of treatment
- Injection or infusion, Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 1,042 participants
- Where
- 72 sitesin 12 countries
- Study dates
- 14 Apr 2022to Sep 2032
- Phase
- Phase 3
- 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 16 to 69 years
- All sexes
- No healthy volunteers
- Child, Adult, Older adult
Who may be able to join
- Males and females aged 16-69 years (inclusive) (age range is 18-69 in US and EU)
- Histologically confirmed classical Hodgkin lymphoma
- Stage I or II supradiaphragmatic disease with no mediastinal bulk disease (defined as greater than a third of the transthoracic diameter at any level of thoracic vertebra as determined by CT) or B symptoms. Bulky disease at other sites is acceptable. Extranodal disease (single extranodal site (stage I) or contiguous nodal extension (stage II)) is acceptable.
- ECOG performance status 0-2.
- No previous treatment for Hodgkin lymphoma
- Fit to receive anthracycline-based chemotherapy (patients with a history of ischaemic heart disease or hypertension should have a left ventricular ejection fraction of ≥50%)
Show all 13Show fewer
- Creatinine clearance (measured or calculated >40ml/min
- Total bilirubin <1.5 x upper limit of normal, unless attributable to disease or known Gilbert's syndrome
- ALT or AST < 2 x upper limit of normal
- Adequate bone marrow function with neutrophils ≥1.0x10^9/l and platelets ≥100x10^9/l
- Haemoglobin ≥8g/dL
- Willing and able to comply with the requirements of the protocol, including contraceptive advice, where applicable
- Written informed consent
Who cannot join
- Previous treatment for Hodgkin lymphoma, excluding short courses of oral corticosteroids at a dose of 100mg prednisolone (or equivalent) for up to 7 days
- Infradiaphragmatic disease
- Nodular lymphocyte predominant Hodgkin lymphoma
- Absence of FDG-avid lesions on baseline PET scan
- Age 70 years or over or age 15 years or under
- Other cancer diagnosed with the last 5 years. Patients with completely excised carcinoma in situ of any type and basal or squamous cell carcinoma of the skin are not excluded
Show all 17Show fewer
- Recurrent or persistent other cancer within last 5 years irrespective of date of initial diagnosis
- Pre-existing grade ≥1 sensory or motor neuropathy from any cause
- History of or current progressive multi-focal leukoencephalopathy or other chronic condition of the brain
- Symptomatic neurologic disease compromising normal activities of daily living or requiring medications
- Infection with HIV, hepatitis C or active hepatitis B infection (surface antigen or DNA positive)
- Any active systemic viral, bacterial or fungal infection requiring systemic antibiotics, antivirals or antifungals within 2 weeks prior to first trial drug dose
- Receiving or recently treated with any other investigational agent (within 4 weeks of trial entry)
- Pregnant or breastfeeding women
- Known hypersensitivity to recombinant proteins, murine proteins, or to any excipient contained in the drug formulation of brentuximab vedotin or any component of ABVD
- Known history of any cardiovascular or respiratory conditions that would preclude anthracycline or bleomycin administration
- Other significant medical or psychiatric comorbidity that in the opinion of the investigator would make administration of ABVD or A2VD hazardous
Trial locations and contacts
72 sites in 12 countries. Contact the study team or a site near you to ask about taking part.
72 sites in 12 countries
United Kingdom31 sites, 31 recruiting
- Recruiting
Aberdeen Royal Infirmary
Aberdeen, AB25 2ZN
Dominic Culligan
Dominic Culligan
- Recruiting
Hampshire Hospitals NHS Foundation Trust
Basingstoke, Hampshire, RG24 9NA
Katie Smith, katherine.smith1@hhft.nhs.uk
Katie Smith
- Recruiting
University Hospitals Birmingham
Birmingham, B15 2GW
Lindsay George, lindsay.george3@uhb.nhs.uk
Lindsay George
- Recruiting
Blackpool Victoria Hospital
Blackpool, Lancashire, FY3 8NR
Mac Macheta
Mac Macheta
- Recruiting
Glan Clwyd Hospital
Bodelwyddan, LL18 5UJ
Earnest Heartin, earnest.heartin@wales.nhs.uk
Earnest Heartin
- Recruiting
Bristol Haematology and Oncology Centre
Bristol
Claire Burney
Claire Burney
- Recruiting
University Hospital of Wales, Cardiff & Vale University Local Health Board
Cardiff, CF14 4XW
Eve Gallop-Evans
Eve Gallop-Evans
- Recruiting
Colchester Hospital, ESNEFT
Colchester, CO4 5JL
Gavin Campbell, gavin.campbell@esneft.nhs.uk
Gavin Campbell
- Recruiting
University Hospital Coventry
Coventry, CV2 2DX
Duncan Murray, duncan.murray@uhcw.nhs.uk
Duncan Murray
- Recruiting
Lanarkshire
Glasgow, Scotland, G71 8BB
Charlotte Thomas
Charlotte Thomas
- Recruiting
Beatson West of Scotland Cancer Centre
Glasgow, G12 0YN
Pam McKay
Pam McKay
- Recruiting
Castle Hill Hospital
Hull, HU16 5JQ
Russell Patmore
Russell Patmore
- Recruiting
St James University Hospital
Leeds, LS9 7TF
Catherine Burton, cathy.burton1@nhs.net
Catherine Burton
- Recruiting
University Hospitals of Leicester NHS Trust
Leicester, LE1 5WW
Sapna Ladani
Sapna Ladani
- Recruiting
The Clatterbridge Cancer Centre NHSFT, 65 Pembroke Place
Liverpool, L7 8YA
Nagesh Kalakonda
Nagesh Kalakonda
- Recruiting
St George's Hospital
London, Tooting, SW17 0QT
Ruth Pettengell
ruth.pettengell2@stgeorges.nhs.uk
- Recruiting
St Bartholomew's Hospital
London, EC1A 7BE
Rebecca Auer
Rebecca Auer
- Recruiting
University College London Hospitals NHS Foundation Trust (UCLH)
London, NW1 2BU
Maria Marzolini
Maria Marzolini
- Recruiting
Royal Marsden Hospital Chelsea
London, SW3 6JZ
Sunil Iyengar, Sunil.Iyengar@rmh.nhs.uk
Sunil Iyengar
- Recruiting
Christie Hospital
Manchester, M20 4BX
Beth Phillips, beth.phillips@manchester.ac.uk
Timothy Illidge, tim.illidge@manchester.ac.uk
- Recruiting
Freeman Hospital, Newcastle
Newcastle upon Tyne, Newcastle, NE7 7DN
Wendy Osborne
Wendy Osborne
- Recruiting
Norfolk & Norwich University Hospital
Norwich, NR4 7UY
Nimish Shah
Nimish Shah
- Recruiting
Nottingham University Hospitals NHST
Nottingham, NG51PB
Emily Chernucha
Emily Chernucha
- Recruiting
Churchill Hospital
Oxford, OX3 7LE
Graham Collins
Graham Collins
- Recruiting
Derriford Hospital
Plymouth, PL6 8DH
Patrick Medd
Patrick Medd
- Recruiting
Royal Hallamshire Hospital
Sheffield, S10 2JF
Nick Morley, nick.morley@nhs.net
Nick Morley
- Recruiting
Southampton General Hospital
Southampton, SO16 6YD
Andrew Davies, andrew.davies@uhs.nhs.uk
Andrew Davies
- Recruiting
Sunderland Royal Hospital
Sunderland, SR4 7TP
Scott Marshall, scott.marshall3@nhs.net
Scott Marshall
- Recruiting
Royal Marsden Hospital
Sutton, SM2 5PT
Sunil Iyengar, Sunil.Iyengar@rmh.nhs.uk
Sunil Iyengar
- Recruiting
Torbay Hospital
Torquay, TQ2 7AA
Deborah Turner
Deborah Turner
- Recruiting
Royal Cornwall Hospital
Truro, TR1 3LJ
Bryson Pottinger
Bryson Pottinger
Australia10 sites, 10 recruiting
- Recruiting
Royal Adelaide Hospital
Adelaide, 5000
Pratyush Giri
Pratyush Giri
- Recruiting
Box Hill Hospital
Box Hill, VIC 3128
Denise Lee
Denise Lee
- Recruiting
Royal Brisbane and Women's Hospital
Brisbane, QLD 4006
Nicholas Weber
Nicholas Weber
- Recruiting
Royal Darwin Hospital
Darwin, NT 0810
Emma Palfreyman
Emma Palfreyman
- Recruiting
Liverpool Hospital
Liverpool
Vu M Hua, 02 8738 5167, Minh.Hua@health.nsw.gov.au
Vu M Hua
- Recruiting
Sunshine Hospital (Western Health)
Melbourne, VIC 3021
Michael Gilbertson
Michael Gilbertson
- Recruiting
Royal North Shore Hospital
Saint Leonards, New South Wales, 2065
Keith Fay
Keith Fay
- Recruiting
Concord Repatriation General Hospital
Sydney, NSW 2139
Nicole Wong Doo
Nicole Wong Doo
- Recruiting
St George Hospital
Sydney, NSW 2217
Fernando Roncolato
Fernando Roncolato
- Recruiting
Townsville University Hospital
Townsville, Queensland, QLD 4814
Jane Royle, Jane.Royle@health.qld.gov.au
Jane Royle
Canada7 sites, 7 recruiting
- Recruiting
QEII Health Sciences Centre
Halifax, Nova Scotia, B3H 3A7
Becky Veinot
Nicholas Forward
- Recruiting
Juravinski Cancer Centre
Hamilton, Ontario, L8V 5C2
Edna Wilson
Joanne Britto
- Recruiting
Ottowa Hospital Research Institute
Ottawa, K1Y 4E9
Ashley-Ann Emond
Isabelle Bence-Bruckler
- Recruiting
Saint John Regional Hospital
Saint John, E2L 4L2
Sharon Turnell
Alfonso Riviera Duarte
- Recruiting
University Health Network Princess Margaret Cancer Centre
Toronto, M5G 2M9
Marie Kirchmeyer
Michael Crump
- Recruiting
Vancouver Cancer Centre
Vancouver, V5Z 4E6
Niamh McMahon
Kerry Savage
- Recruiting
CancerCare Manitoba
Winnipeg, R3E 0V9
Tianna Rarama
Leonard Minuk
Belgium5 sites, 5 recruiting
- Recruiting
Universitair Ziekenhuis Antwerpen
Antwerp
Eva De Backer Dr, Eva.debacker2@uza.be
Eva De Backer
- Recruiting
Ziekenhuis Netwerk Antwerpen
Antwerp
Ka Lung Wu, kalung.wu@zna.be
Ka Lung Wu
- Recruiting
UZ Leuven
Leuven
Sherida Woei-A-Jin, sherida.woei-a-jin@uzleuven.be
Sherida Woei-A-Jin
- Recruiting
CHU-UCL Namur
Namur
Vincent Remouchamps, vincent.remouchamps@uclouvain.be
Vincent Remouchamps
- Recruiting
AZ Delta Campus Rumbeke
Roeselare, West Flanders, Deltalaan 1, 8800
Caressa Meert, caressa.meert@azdelta.be
Caressa Meert
Netherlands5 sites, 5 recruiting
- Recruiting
Amsterdam UMC - location VUMC
Amsterdam, 1081 HV
Sanne Tonnio
Sanne Tonnio
- Recruiting
Reinier de Graafweg 3-11 - Postbus 5011 - 2625 AD Delft
Delft
Posthuma Ward
Posthuma Ward
- Recruiting
Universitair Medisch Centrum Groningen
Groningen
Wouter Plattel, w.j.plattel@umcg.nl
Wouter Plattel
- Recruiting
Radboud University Medical Center Nijmegen
Nijmegen
Wendy Stevens, Wendy.Stevens@radboudumc.nl
- Recruiting
NL 331 - Haaglanden Medisch Centrum (HMC) - Haaglanden MC
The Hague
Liane te Boome, l.te.boome@haaglandenmc.nl
Liane Te Boome
United States3 sites, 3 recruiting
- Recruiting
University of Miami School of Medicine
Miami, Florida, 33136
Safia Sawleh
Craig Moskowitz
- Recruiting
Memorial Sloan Kettering Cancer Center
New York, New York, 10065
Pamela Park
Alison Moskowitz
- Recruiting
Stanford University - (Stanford Cancer Institute)
Stanford, California, 94305
Austin Yeung
Ranjana Advani
Ireland3 sites, 3 recruiting
- Recruiting
St James's Hospital
Dublin
Robert Henderson, rhenderson@stjames.ie
Robert Henderson
- Recruiting
St. Vincent's University Hospital
Dublin
Liam Smyth, liamsmyth@svhg.ie
Liam Smyth
- Recruiting
University Hospital Galway
Galway
Amjad Hayat, Amjad.hayat@hse.ie
Amjad Hayat
Spain3 sites, 3 recruiting
- Recruiting
Hospital Del Mar
Barcelona, ES 08003
Blanca Sanchez Gonzalez, 97894@parcdesalutmar.cat
Blanca Sanchez Gonzalez
- Recruiting
Institut Catala d'Oncologia
Barcelona, ES 08908
Sureda-Balari Anna
Sureda-Balari Anna
- Recruiting
Complejo Hospitalario de Navarra
Pamplona
Jose Arguinano, jm.arguinano.perez@navarra.es
Jose Arguinano
Denmark2 sites, 2 recruiting
- Recruiting
Aarhus University Hospitak Skjeby
Aarhus
Peter Kamper, petekamp@rm.dk
Peter Kamper
- Recruiting
Rigshospitalet
Copenhagen
Martin Hutchings, martin.hutchings@regionh.dk
Martin Hutchings
New Zealand1 site, 1 recruiting
- Recruiting
Auckland City Hospital
Auckland, 1023
Leanne Berkahn
Leanne Berkahn
Portugal1 site, 1 recruiting
- Recruiting
Instituto Portugues de Oncologia de Lisboa Francisco Gentil
Lisbon
Susana Carvalho, susanacoelhocarvalho@hotmail.com
Susana Carvalho
Slovakia1 site, 1 recruiting
- Recruiting
Narodny Onkologicky Ustav
Bratislava
Andrej Vranovsky, andrej.vranovsky@nou.sk
Andrej Vranovsky
About this study
Official title: A Randomised Phase III Trial With a PET Response Adapted Design Comparing ABVD +/- ISRT With A2VD +/- ISRT in Patients With Previously Untreated Stage IA/IIA Hodgkin Lymphoma
RADAR is a multicentre, international, randomised, open-label phase III clinical trial composed of 2 trials running in parallel. Trial 1 will be led and sponsored by University College London (UCL) and conducted in Europe and Australia/New Zealand. Trial 2 will be led by the Canadian Cancer Trials Group (CCTG) and conducted in North America, with CCTG the regulatory sponsor in Canada, and University of Miami the regulatory sponsor and IND holder in the US. Datasets from Trial 1 and Trial 2 will be combined to achieve the total sample size. Data analysis will be performed by UCL and therefore UCL is responsible for the clinicaltrials.gov entry.
Eligible patients will be randomised to receive either ABVD or A2VD chemotherapy.
Read more
An interim PET-CT scan will be performed after 2 cycles of treatment, which will be used to adapt subsequent treatment. Patients will receive a total of 3-4 cycles of chemotherapy and may also receive involved site radiotherapy as consolidation.
Patients will be followed up for a minimum of 5 years after treatment.
Read the detailed description
Eligible patients will be randomised to receive either ABVD chemotherapy (doxorubicin, bleomycin, vinblastine and dacarbazine) or A2VD chemotherapy (doxorubicin, brentuximab vedotin, vinblastine and dacarbazine, with growth factor support).
If patients agree, they will have a PET-CT scan after 1 cycle (PET1). The result of this scan will be blinded and used for exploratory endpoints only. Treatment will not be influenced by the result of this scan.
All patients will have a PET-CT scan after 2 cycles of treatment (PET2) which will be centrally reviewed. The Deauville score from central review will be used to risk adapt subsequent therapy as follows:
- Patients with Deauville score 1-3 will have one further cycle of their randomised chemotherapy and then enter follow up.
- Patients with Deauville score 4 will have two further cycles of their randomised chemotherapy followed by involved site radiotherapy
- Patients with Deauville score 5 will be withdrawn from trial treatment. They will have further treatment at their treating clinician's discretion and will enter follow up for the trial.
Patients with Deauville score 4 on PET2 will have a final PET-CT scan to confirm adequate treatment response.
Patients will be followed up for a minimum of 5 years after completing treatment.
- Conditions
- Hodgkin Lymphoma
- Being tested
- Involved site radiotherapy, Doxorubicin, Bleomycin, Brentuximab vedotin, Vinblastine
- Keywords
- PET-response adapted, Stage IA/IIA Hodgkin lymphoma, Brentuximab vedotin
- Medical subject headings
- Hodgkin Disease
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Involved site radiotherapyRadiation
Involved site radiotherapy as per International Lymphoma Radiation Oncology Group (ILROG) guidelines.
Recommended dose 30Gy
DoxorubicinDrug
See arm description
BleomycinDrug
See arm description
Brentuximab vedotinDrug
See arm description
VinblastineDrug
See arm description
DacarbazineDrug
See arm description
Haematopoietic growth factorDrug
Also called Filgrastim, G-CSF, Pegfilgrastim
See arm description
| Study group | Role | What they receive |
|---|---|---|
| ABVD +/- ISRT | Active comparator | 2 x 28 day cycles of ABVD: Doxorubicin 25mg/m^2 IV days 1 \& 15 Bleomycin 10000 IU/m^2 days 1 \& 15 Vinblastine 6mg/m^2 days 1 \& 15 Dacarbazine 375mg/m^2 days 1 \& 15
PET-CT after 2 cycles will determine subsequent treatment:
Deauville score 1-3 (PET CMR): 1 further cycle of ABVD then follow up Deauville score 4 (PET positive): 2 further cycles of ABVD followed by involved site radiotherapy (ISRT) Deauville score 5: withdraw from trial treatment; further treatment will be given at the treating clinician's discretion. Enter follow up for the trial. Receives: Radiation: Involved site radiotherapy; Drug: Doxorubicin; Drug: Bleomycin; Drug: Vinblastine; Drug: Dacarbazine |
| A2VD +/- ISRT | Experimental | 2 x 28 day cycles of A2VD: Doxorubicin 25mg/m^2 IV days 1 \& 15 Brentuximab vedotin 1.2mg/kg (max 120mg) days 1 \& 15 Vinblastine 6mg/m^2 days 1 \& 15 Dacarbazine 375mg/m^2 days 1 \& 15 Filgrastim (or equivalent haematopoietic growth factor) for 5-7 days from day 2 and day 16 (or single dose of peg-filgrastim on days 2 \& 16)
PET-CT after 2 cycles will determine subsequent treatment:
Deauville score 1-3 (PET CMR): 1 further cycle of A2VD then follow up Deauville score 4 (PET positive): 2 further cycles of A2VD followed by involved site radiotherapy (ISRT) Deauville score 5: withdraw from trial treatment; further treatment will be given at the treating clinician's discretion. Enter follow up for the trial. Receives: Radiation: Involved site radiotherapy; Drug: Doxorubicin; Drug: Brentuximab vedotin; Drug: Vinblastine; Drug: Dacarbazine; Drug: Haematopoietic growth factor |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression free survival (PFS)
Time from randomisation to first date of progression or death
Measured: 3 years from end of treatment
Secondary outcomes (5)
PET-CMR (complete metabolic response) rate
Proportion of patients who have Deauville score 1-3 on PET-CT scan
Measured: At the end of cycle 2 (each cycle is 28 days)
Event-free survival (EFS)
Time from randomisation to first date of progression, death or a positive PET2 scan (whichever occurs first)
Measured: 5 years from end of treatment
Overall survival (OS)
Time from randomisation to death
Measured: 5 years from end of treatment
Incidence of second cancers and cardiovascular disease
Proportion in each arm who develop a second cancer or cardiovascular disease
Measured: 5 years from end of treatment
Safety and toxicity of ABVD and A2VD as described by CTCAE v5.0
Numbers of patients experiencing a grade 3+ adverse event of each type will be presented and compared between the arms. Only patients who start treatment will be included
Measured: From start of treatment to 30 days post treatment
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Dec 2020
- Study start14 Apr 2022
- Primary completionSep 2030 (estimated)
- Study completionSep 2032 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Hodgkin LymphomaStudies of the same condition, open and under way.
- More trials run by University College, LondonThe sponsor's other registered studies.
- 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 3
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 1,042 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University College, London
- Sponsor type
- University, hospital or other
- Collaborators
- Takeda, University of Miami, European Organisation for Research and Treatment of Cancer - EORTC, Australasian Leukaemia and Lymphoma Group, Seagen Inc., Canadian Cancer Trials Group
- Responsible party
- Sponsor
- Investigators
- John Radford, Principal investigator, University of Manchester / Christie Hospital, Manchester
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04685616
- Sponsor's protocol ID
- RADAR
- Other IDs
- 2020-005160-65, IISR X25041, UCL/15/0105, CCTG HD.12, IRB number 20230081
- Acronym
- RADAR
- Status last verified
- Mar 2026
- First submitted
- 27 Nov 2020
- Last updated
- 8 Jul 2026
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Undecided
Publications
Kreuzberger N, Goldkuhle M, von Tresckow B, Kobe C, Sickinger MT, Monsef I, Skoetz N. Positron emission tomography-adapted therapy for first-line treatment in adults with Hodgkin lymphoma. Cochrane Database Syst Rev. 2025 Mar 26;3(3):CD010533. doi: 10.1002/14651858.CD010533.pub3.
PubMed 40135712
Study at a glance
From the registry record, last updated by the sponsor on 8 Jul 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Randomised Phase III Trial With a PET Response Adapted Design Comparing ABVD +/- ISRT With A2VD +/- ISRT in Patients With Previously Untreated Stage IA/IIA Hodgkin Lymphoma
- ClinicalTrials.gov ID
- NCT04685616
- Acronym / sponsor ID
- RADAR / RADAR
- Conditions
- Hodgkin Lymphoma
- Keywords
- PET-response adapted, Stage IA/IIA Hodgkin lymphoma, Brentuximab vedotin
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Recruiting
- Enrolment
- 1,042 participants (estimated)
- Lead sponsor
- University College, LondonUniversity, hospital or other
- Collaborators
- Takeda, University of Miami, European Organisation for Research and Treatment of Cancer - EORTC, Australasian Leukaemia and Lymphoma Group, Seagen Inc., Canadian Cancer Trials Group
- Study start
- 14 Apr 2022 (actual)
- Primary completion
- Sep 2030 (estimated)
- Study completion
- Sep 2032 (estimated)
- First posted
- 28 Dec 2020 (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.
RADAR is a multicentre, international, randomised, open-label phase III clinical trial composed of 2 trials running in parallel. Trial 1 will be led and sponsored by University College London (UCL) and conducted in Europe and Australia/New Zealand. Trial 2 will be led by the Canadian Cancer Trials Group (CCTG) and conducted in North America, with CCTG the regulatory sponsor in Canada, and University of Miami the regulatory sponsor and IND holder in the US. Datasets from Trial 1 and Trial 2 will be combined to achieve the total sample size. Data analysis will be performed by UCL and therefore UCL is responsible for the clinicaltrials.gov entry.
Eligible patients will be randomised to receive either ABVD or A2VD chemotherapy.
An interim PET-CT scan will be performed after 2 cycles of treatment, which will be used to adapt subsequent treatment. Patients will receive a total of 3-4 cycles of chemotherapy and may also receive involved site radiotherapy as consolidation.
Patients will be followed up for a minimum of 5 years after treatment.
Detailed description
Eligible patients will be randomised to receive either ABVD chemotherapy (doxorubicin, bleomycin, vinblastine and dacarbazine) or A2VD chemotherapy (doxorubicin, brentuximab vedotin, vinblastine and dacarbazine, with growth factor support).
If patients agree, they will have a PET-CT scan after 1 cycle (PET1). The result of this scan will be blinded and used for exploratory endpoints only. Treatment will not be influenced by the result of this scan.
All patients will have a PET-CT scan after 2 cycles of treatment (PET2) which will be centrally reviewed. The Deauville score from central review will be used to risk adapt subsequent therapy as follows:
- Patients with Deauville score 1-3 will have one further cycle of their randomised chemotherapy and then enter follow up.
- Patients with Deauville score 4 will have two further cycles of their randomised chemotherapy followed by involved site radiotherapy
- Patients with Deauville score 5 will be withdrawn from trial treatment. They will have further treatment at their treating clinician's discretion and will enter follow up for the trial.
Patients with Deauville score 4 on PET2 will have a final PET-CT scan to confirm adequate treatment response.
Patients will be followed up for a minimum of 5 years after completing treatment.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| ABVD +/- ISRT | Active comparator | Radiation: Involved site radiotherapy, Drug: Doxorubicin, Drug: Bleomycin, Drug: Vinblastine, Drug: Dacarbazine2 x 28 day cycles of ABVD: Doxorubicin 25mg/m^2 IV days 1 \& 15 Bleomycin 10000 IU/m^2 days 1 \& 15 Vinblastine 6mg/m^2 days 1 \& 15 Dacarbazine 375mg/m^2 days 1 \& 15 PET-CT after 2 cycles will determine subsequent treatment: Deauville score 1-3 (PET CMR): 1 further cycle of ABVD then follow up Deauville score 4 (PET positive): 2 further cycles of ABVD followed by involved site radiotherapy (ISRT) Deauville score 5: withdraw from trial treatment; further treatment will be given at the treating clinician's discretion. Enter follow up for the trial. |
| A2VD +/- ISRT | Experimental | Radiation: Involved site radiotherapy, Drug: Doxorubicin, Drug: Brentuximab vedotin, Drug: Vinblastine, Drug: Dacarbazine, Drug: Haematopoietic growth factor2 x 28 day cycles of A2VD: Doxorubicin 25mg/m^2 IV days 1 \& 15 Brentuximab vedotin 1.2mg/kg (max 120mg) days 1 \& 15 Vinblastine 6mg/m^2 days 1 \& 15 Dacarbazine 375mg/m^2 days 1 \& 15 Filgrastim (or equivalent haematopoietic growth factor) for 5-7 days from day 2 and day 16 (or single dose of peg-filgrastim on days 2 \& 16) PET-CT after 2 cycles will determine subsequent treatment: Deauville score 1-3 (PET CMR): 1 further cycle of A2VD then follow up Deauville score 4 (PET positive): 2 further cycles of A2VD followed by involved site radiotherapy (ISRT) Deauville score 5: withdraw from trial treatment; further treatment will be given at the treating clinician's discretion. Enter follow up for the trial. |
Who may qualify
- Ages
- 16 to 69 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Child, Adult, Older adult
Key inclusion criteria (13 listed)
- Males and females aged 16-69 years (inclusive) (age range is 18-69 in US and EU)
- Histologically confirmed classical Hodgkin lymphoma
- Stage I or II supradiaphragmatic disease with no mediastinal bulk disease (defined as greater than a third of the transthoracic diameter at any level of thoracic vertebra as determined by CT) or B symptoms. Bulky disease at other sites is acceptable. Extranodal disease (single extranodal site (stage I) or contiguous nodal extension (stage II)) is acceptable.
- ECOG performance status 0-2.
- No previous treatment for Hodgkin lymphoma
Key exclusion criteria (17 listed)
- Previous treatment for Hodgkin lymphoma, excluding short courses of oral corticosteroids at a dose of 100mg prednisolone (or equivalent) for up to 7 days
- Infradiaphragmatic disease
- Nodular lymphocyte predominant Hodgkin lymphoma
- Absence of FDG-avid lesions on baseline PET scan
- Age 70 years or over or age 15 years or under
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 |
|---|---|---|
| Involved site radiotherapyInvolved site radiotherapy as per International Lymphoma Radiation Oncology Group (ILROG) guidelines. Recommended dose 30Gy | Radiation | A2VD +/- ISRT, ABVD +/- ISRT |
| DoxorubicinSee arm description | Drug | A2VD +/- ISRT, ABVD +/- ISRT |
| BleomycinSee arm description | Drug | ABVD +/- ISRT |
| Brentuximab vedotinSee arm description | Drug | A2VD +/- ISRT |
| VinblastineSee arm description | Drug | A2VD +/- ISRT, ABVD +/- ISRT |
| DacarbazineSee arm description | Drug | A2VD +/- ISRT, ABVD +/- ISRT |
| Haematopoietic growth factorAlso: Filgrastim, G-CSF, PegfilgrastimSee arm description | Drug | A2VD +/- ISRT |
Primary outcome
Progression free survival (PFS)
Time frame: 3 years from end of treatment
Time from randomisation to first date of progression or death
5 secondary outcomes
PET-CMR (complete metabolic response) rate
Time frame: At the end of cycle 2 (each cycle is 28 days)
Event-free survival (EFS)
Time frame: 5 years from end of treatment
Overall survival (OS)
Time frame: 5 years from end of treatment
Incidence of second cancers and cardiovascular disease
Time frame: 5 years from end of treatment
Safety and toxicity of ABVD and A2VD as described by CTCAE v5.0
Time frame: From start of treatment to 30 days post treatment
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 8 Jul 2026.
- Derived from this study: PubMed 40135712Kreuzberger N, Goldkuhle M, von Tresckow B, Kobe C, Sickinger MT, Monsef I, Skoetz N. Positron emission tomography-adapted therapy for first-line treatment in adults with Hodgkin lymphoma. Cochrane Database Syst Rev. 2025 Mar 26;3(3):CD010533. doi: 10.1002/14651858.CD010533.pub3.
- Individual participant dataSharing planned: Undecided
Related trials for Hodgkin Lymphoma
Active, not recruitingPhase 2
Brentuximab Vedotin and Combination Chemotherapy in Treating Patients With CD30-Positive Peripheral T-cell Lymphoma
Adult T-Cell Leukemia/Lymphoma, Anaplastic Large Cell Lymphoma, ALK-Negative
Active, not recruitingPhase 2
A Study of Anakinra to Prevent or Treat Severe Side Effects for Patients Receiving CAR-T Cell Therapy
B Cell ALL, B-Cell Lymphoma
RecruitingPhase 2
Ibrutinib Combination Therapy in Transplant Ineligible Individuals With Newly Diagnosed Primary CNS Lymphoma
Non-hodgkin Lymphoma
Not yet recruitingPhase 2
Obesity Treatment With Phentermine-Topiramate ER in AYA Surviving Leukemia and Lymphoma
Acute Lymphoblastic Leukemia in Remission, Hodgkin Lymphoma in Remission
Active, not recruitingPhase 1
Veliparib, Cyclophosphamide, and Doxorubicin Hydrochloride in Treating Patients With Metastatic or Unresectable Solid Tumors or Non-Hodgkin Lymphoma
Ann Arbor Stage III Non-Hodgkin Lymphoma, Ann Arbor Stage IV Non-Hodgkin Lymphoma
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.
John Radford principal investigator
University of Manchester / Christie Hospital, Manchester
72 sites in 12 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Involved site radiotherapy, Doxorubicin and Bleomycin in people with Hodgkin Lymphoma, run by University College, London at 72 sites in 12 countries.
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 13 inclusion and 17 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 8 Jul 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 72 sites in United Kingdom, Australia, Canada, Belgium, Netherlands and 7 more countries. 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.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
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 RADAR Trial Coordinator (+44(0)207 679 9860, ctc.radar@ucl.ac.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Progression free survival (PFS) (time frame: 3 years from end of treatment). 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 NCT04685616, which also lists 1 linked publication.
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 8 Jul 2026; AzTrials last refreshed its copy on 8 Nov 2026.