Adenoid Cystic CarcinomaPhase 2NCT07845097
Phase II Trial Comparing Stereotactic Body Radiotherapy Versus Active Surveillance for Oligometastatic Adenoid Cystic Carcinoma
A Phase 2 study testing Stereotactic body radiotherapy (SBRT) in people with Adenoid Cystic Carcinoma and Oligometastatic, run by All India Institute of Medical Sciences.
Trial summary
The SABR Oligo-ACC Trial is a randomized phase II study comparing early initiation of SBRT to all metastases versus active surveillance in patients with oligometastatic ACC. By directly comparing these strategies, the study will determine whether treating limited metastatic disease at the earliest opportunity… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Adenoid Cystic Carcinoma, Oligometastatic
- What is being tested?
- Stereotactic body radiotherapy (SBRT)
- Type of treatment
- Surgery or procedure
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 90 participants
- Where
- No sites listed yet
- Study dates
- 20 Dec 2026to 20 Dec 2032
- Phase
- Phase 2
- 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
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Age ≥18 years.
- Histologically confirmed adenoid cystic carcinoma (ACC) of any primary site.
- Oligometastatic disease, defined as 1-5 active radiologically detectable extracranial metastatic lesions involving one or more organs.
- Both synchronous/metachronous/ oligoprogressive oligometastatic disease are eligible.
- All active metastatic lesions must be amenable to comprehensive SBRT.
- Controlled primary tumor or loco-regional disease amenable to sugery and radiotherapy
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- ECOG Performance Status 0-2.
- Adequate organ function to undergo SBRT and protocol-specified investigations.
- Ability and willingness to comply with study assessments and follow-up.
- Written informed consent.
Who cannot join
- >5 active metastatic lesions at the time of randomization.
- Any active metastatic lesion that is not safely amenable to SBRT according to protocol-defined dose and normal-tissue constraints.
- Uncontrolled or progressive primary/regional disease requiring immediate local treatment, except for newly diagnosed synchronous disease that has been appropriately managed and is suitable for protocol randomization.
- Symptomatic metastatic disease requiring immediate systemic therapy, surgery or palliative radiotherapy.
- Metastatic disease associated with an oncological emergency, including impending pathological fracture, spinal cord compression, unstable spinal disease, major airway compromise, major vascular compromise or other condition requiring urgent intervention.
- Active untreated CNS metastases requiring surgery, SRS or other CNS-directed treatment.
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- Oligoinduced disease during active systemic therapy.
- Concurrent systemic anticancer therapy at randomization or during protocol-defined SBRT.
- Previous radiotherapy that precludes safe delivery of protocol-specified SBRT because of cumulative dose constraints.
- Another active malignancy requiring treatment or likely to interfere with assessment of ACC-related outcomes.
- Uncontrolled intercurrent illness or medical condition that would preclude protocol treatment or follow-up.
- Pregnancy or lactation.
- Inability or unwillingness to provide informed consent or comply with study procedures.
About this study
Official title: SABR Oligo-ACC Trial: A Randomized Phase II Trial Comparing Stereotactic Body Radiotherapy Versus Active Surveillance for Oligometastatic Adenoid Cystic Carcinoma
The SABR Oligo-ACC Trial is a randomized phase II study comparing early initiation of SBRT to all metastases versus active surveillance in patients with oligometastatic ACC.
By directly comparing these strategies, the study will determine whether treating limited metastatic disease at the earliest opportunity translates into improved progression-free survival, while also evaluating overall survival, local control, subsequent patterns of progression, time to systemic therapy, toxicity and quality of life.
Read the detailed description
The oligometastatic state represents a potentially distinct phase of cancer dissemination in which eradication of all visible metastatic disease may alter subsequent disease progression. Prospective randomized trials in several solid tumors have provided evidence supporting this paradigm. In the phase II SABR-COMET trial, patients with a controlled primary tumor and 1-5 metastases randomized to comprehensive SABR had longer overall survival than those receiving standard treatment alone (median 41 vs 28 months; HR 0.57). Long-term follow-up demonstrated a 5-year overall survival of 42.3% with SABR versus 17.7% with standard treatment. There is robust prospective evidence that metastasis-directed therapy can modify the course of oligometastatic disease; however, their findings cannot be directly extrapolated to adenoid cystic carcinoma (ACC), which has distinct tumor biology and natural history.
A recent retrospective study has demonstrated that patients with oligometastatic ACC had more favorable outcomes than patients with higher metastatic burden, and that early initiation of local treatment was associated with improvement in PFS. However, these observations are subject to selection and other inherent biases of retrospective studies and cannot establish that local ablative therapy itself improves survival or progression-free survival.
The SABR Oligo-ACC Trial is therefore proposed as a randomized, phase II study comparing early initiation of SBRT to all metastases versus active surveillance in patients with oligometastatic ACC.
90 patients with histologically confirmed ACC of any primary site along with oligometastatic disease (1-5 active radiologically detectable extracranial metastatic lesions involving one or more organs) will be participating in this study.
They will be randomized (computer-generated randomization system) in a 1:1 ratio to either Stereotactic Body Radiotherapy (SBRT) or Active Surveillance.
Arm A=SBRT to all oligometastasis Arm B =Active surveillance Overall survival (OS), Progression Free Survival (PFS), Local Control of metatstatic lesion, SBRT toxicity (CTCAE version 5.0) and Quality of life (EORTC QLQ C-30) will be assessed at different timelines.
- Conditions
- Adenoid Cystic Carcinoma, Oligometastatic
- Being tested
- Stereotactic body radiotherapy (SBRT)
- Medical subject headings
- Carcinoma, Adenoid Cystic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Stereotactic body radiotherapy (SBRT)Radiation
SBRT will be delivered using image-guided, highly conformal radiotherapy with appropriate immobilization and image guidance, using institutionally validated dose-fractionation schedules based on the site, size, number, and proximity of lesions to critical organs. Treatment will be planned to achieve ablative tumor doses while respecting established organ-at-risk constraints. SBRT will preferably be completed within 1-2 weeks.
| Study group | Role | What they receive |
|---|---|---|
| SBRT ARM | Experimental | Comprehensive SBRT to all active metastatic lesions that are safely amenable to stereotactic treatment. Receives: Radiation: Stereotactic body radiotherapy (SBRT) |
| Active surveillance | No intervention | Observation with scheduled clinical and radiological assessment, with initiation of local or systemic treatment if clinically indicated. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Progression-free survival (PFS)
The length of time during and after the treatment of a disease, that a patient lives with the disease but it does not get worse.
Measured: 5 years
Secondary outcomes (3)
Overall survival (OS)
The length of time from the start of treatment for the disease, that patients diagnosed with the disease are still alive.
Measured: assessed at follow up visits 1 to 10 years
Local control
Measured: 5 years
Radiation Toxicity
using CTCAE version 5.0. : Grade 1 Mild; asymptomatic or mild symptoms; clinical or diagnostic observations only; intervention not indicated. Grade 2 Moderate; minimal, local or noninvasive intervention indicated; limiting age appropriate instrumental Activities of Daily Living. Grade 3 Severe or medically significant but not immediately life-threatening; hospitalization or prolongation of hospitalization indicated; disabling; limiting self care Activities of Daily Living . Grade 4 Life-threatening consequences; urgent intervention indicated. Grade 5 Death related to AE.
Measured: 5 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted28 Sep 2026
- Study start20 Dec 2026 (estimated)
- Primary completion20 Dec 2032 (estimated)
- Study completion20 Dec 2032 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (6)Papers the sponsor has linked to this study.
- Other trials for Adenoid Cystic CarcinomaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 90 participants (estimated)
Sponsor and investigators
- Lead sponsor
- All India Institute of Medical Sciences
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Aman Sharma, All India Institute of Medical Sciences
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07845097
- Sponsor's protocol ID
- AIIMS SABR Oligo-ACC Trial
- Status last verified
- Sep 2026
- First submitted
- 22 Sep 2026
- Last updated
- 28 Sep 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
Publications
Geiger JL, Ismaila N, Beadle B, Caudell JJ, Chau N, Deschler D, Glastonbury C, Kaufman M, Lamarre E, Lau HY, Licitra L, Moore MG, Rodriguez C, Roshal A, Seethala R, Swiecicki P, Ha P. Management of Salivary Gland Malignancy: ASCO Guideline. J Clin Oncol. 2021 Jun 10;39(17):1909-1941. doi: 10.1200/JCO.21.00449. Epub 2021 Apr 26.
PubMed 33900808Phillips R, Shi WY, Deek M, Radwan N, Lim SJ, Antonarakis ES, Rowe SP, Ross AE, Gorin MA, Deville C, Greco SC, Wang H, Denmeade SR, Paller CJ, Dipasquale S, DeWeese TL, Song DY, Wang H, Carducci MA, Pienta KJ, Pomper MG, Dicker AP, Eisenberger MA, Alizadeh AA, Diehn M, Tran PT. Outcomes of Observation vs Stereotactic Ablative Radiation for Oligometastatic Prostate Cancer: The ORIOLE Phase 2 Randomized Clinical Trial. JAMA Oncol. 2020 May 1;6(5):650-659. doi: 10.1001/jamaoncol.2020.0147.
PubMed 32215577Lorini L, Ardighieri L, Bozzola A, Romani C, Bignotti E, Buglione M, Guerini A, Lombardi D, Deganello A, Tomasoni M, Bonini SA, Sigala S, Farina D, Ravanelli M, Bossi P. Prognosis and management of recurrent and/or metastatic head and neck adenoid cystic carcinoma. Oral Oncol. 2021 Apr;115:105213. doi: 10.1016/j.oraloncology.2021.105213. Epub 2021 Feb 9.
PubMed 33578204Tyan K, Bae JE, Lorch JH, Margalit DN, Tishler RB, Huynh MA, Jo VY, Haddad RI, Chau NG, Hanna GJ, Schoenfeld JD. Oligometastatic adenoid cystic carcinoma: Correlating tumor burden and time to treatment with outcomes. Head Neck. 2022 Mar;44(3):722-734. doi: 10.1002/hed.26964. Epub 2021 Dec 19.
PubMed 34927307Palma DA, Olson R, Harrow S, Gaede S, Louie AV, Haasbeek C, Mulroy L, Lock M, Rodrigues GB, Yaremko BP, Schellenberg D, Ahmad B, Senthi S, Swaminath A, Kopek N, Liu M, Moore K, Currie S, Schlijper R, Bauman GS, Laba J, Qu XM, Warner A, Senan S. Stereotactic Ablative Radiotherapy for the Comprehensive Treatment of Oligometastatic Cancers: Long-Term Results of the SABR-COMET Phase II Randomized Trial. J Clin Oncol. 2020 Sep 1;38(25):2830-2838. doi: 10.1200/JCO.20.00818. Epub 2020 Jun 2.
PubMed 32484754Palma DA, Olson R, Harrow S, Gaede S, Louie AV, Haasbeek C, Mulroy L, Lock M, Rodrigues GB, Yaremko BP, Schellenberg D, Ahmad B, Griffioen G, Senthi S, Swaminath A, Kopek N, Liu M, Moore K, Currie S, Bauman GS, Warner A, Senan S. Stereotactic ablative radiotherapy versus standard of care palliative treatment in patients with oligometastatic cancers (SABR-COMET): a randomised, phase 2, open-label trial. Lancet. 2019 May 18;393(10185):2051-2058. doi: 10.1016/S0140-6736(18)32487-5. Epub 2019 Apr 11.
PubMed 30982687
Study at a glance
From the registry record, last updated by the sponsor on 28 Sep 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- SABR Oligo-ACC Trial: A Randomized Phase II Trial Comparing Stereotactic Body Radiotherapy Versus Active Surveillance for Oligometastatic Adenoid Cystic Carcinoma
- ClinicalTrials.gov ID
- NCT07845097
- Acronym / sponsor ID
- AIIMS SABR Oligo-ACC Trial
- Conditions
- Adenoid Cystic Carcinoma, Oligometastatic
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Not yet recruiting
- Enrolment
- 90 participants (estimated)
- Lead sponsor
- All India Institute of Medical SciencesUniversity, hospital or other
- Study start
- 20 Dec 2026 (estimated)
- Primary completion
- 20 Dec 2032 (estimated)
- Study completion
- 20 Dec 2032 (estimated)
- First posted
- 28 Sep 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The SABR Oligo-ACC Trial is a randomized phase II study comparing early initiation of SBRT to all metastases versus active surveillance in patients with oligometastatic ACC.
By directly comparing these strategies, the study will determine whether treating limited metastatic disease at the earliest opportunity translates into improved progression-free survival, while also evaluating overall survival, local control, subsequent patterns of progression, time to systemic therapy, toxicity and quality of life.
Detailed description
The oligometastatic state represents a potentially distinct phase of cancer dissemination in which eradication of all visible metastatic disease may alter subsequent disease progression. Prospective randomized trials in several solid tumors have provided evidence supporting this paradigm. In the phase II SABR-COMET trial, patients with a controlled primary tumor and 1-5 metastases randomized to comprehensive SABR had longer overall survival than those receiving standard treatment alone (median 41 vs 28 months; HR 0.57). Long-term follow-up demonstrated a 5-year overall survival of 42.3% with SABR versus 17.7% with standard treatment. There is robust prospective evidence that metastasis-directed therapy can modify the course of oligometastatic disease; however, their findings cannot be directly extrapolated to adenoid cystic carcinoma (ACC), which has distinct tumor biology and natural history.
A recent retrospective study has demonstrated that patients with oligometastatic ACC had more favorable outcomes than patients with higher metastatic burden, and that early initiation of local treatment was associated with improvement in PFS. However, these observations are subject to selection and other inherent biases of retrospective studies and cannot establish that local ablative therapy itself improves survival or progression-free survival.
The SABR Oligo-ACC Trial is therefore proposed as a randomized, phase II study comparing early initiation of SBRT to all metastases versus active surveillance in patients with oligometastatic ACC.
90 patients with histologically confirmed ACC of any primary site along with oligometastatic disease (1-5 active radiologically detectable extracranial metastatic lesions involving one or more organs) will be participating in this study.
They will be randomized (computer-generated randomization system) in a 1:1 ratio to either Stereotactic Body Radiotherapy (SBRT) or Active Surveillance.
Arm A=SBRT to all oligometastasis Arm B =Active surveillance Overall survival (OS), Progression Free Survival (PFS), Local Control of metatstatic lesion, SBRT toxicity (CTCAE version 5.0) and Quality of life (EORTC QLQ C-30) will be assessed at different timelines.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| SBRT ARM | Experimental | Radiation: Stereotactic body radiotherapy (SBRT)Comprehensive SBRT to all active metastatic lesions that are safely amenable to stereotactic treatment. |
| Active surveillance | No intervention | –Observation with scheduled clinical and radiological assessment, with initiation of local or systemic treatment if clinically indicated. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- Age ≥18 years.
- Histologically confirmed adenoid cystic carcinoma (ACC) of any primary site.
- Oligometastatic disease, defined as 1-5 active radiologically detectable extracranial metastatic lesions involving one or more organs.
- Both synchronous/metachronous/ oligoprogressive oligometastatic disease are eligible.
- All active metastatic lesions must be amenable to comprehensive SBRT.
Key exclusion criteria (13 listed)
- >5 active metastatic lesions at the time of randomization.
- Any active metastatic lesion that is not safely amenable to SBRT according to protocol-defined dose and normal-tissue constraints.
- Uncontrolled or progressive primary/regional disease requiring immediate local treatment, except for newly diagnosed synchronous disease that has been appropriately managed and is suitable for protocol randomization.
- Symptomatic metastatic disease requiring immediate systemic therapy, surgery or palliative radiotherapy.
- Metastatic disease associated with an oncological emergency, including impending pathological fracture, spinal cord compression, unstable spinal disease, major airway compromise, major vascular compromise or other condition requiring urgent intervention.
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 |
|---|---|---|
| Stereotactic body radiotherapy (SBRT)SBRT will be delivered using image-guided, highly conformal radiotherapy with appropriate immobilization and image guidance, using institutionally validated dose-fractionation schedules based on the site, size, number, and proximity of lesions to critical organs. Treatment will be planned to achieve ablative tumor doses while respecting established organ-at-risk constraints. SBRT will preferably be completed within 1-2 weeks. | Radiation | SBRT ARM |
Primary outcome
Progression-free survival (PFS)
Time frame: 5 years
The length of time during and after the treatment of a disease, that a patient lives with the disease but it does not get worse.
3 secondary outcomes
Overall survival (OS)
Time frame: assessed at follow up visits 1 to 10 years
Local control
Time frame: 5 years
Radiation Toxicity
Time frame: 5 years
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 28 Sep 2026.
- Background: PubMed 33900808Geiger JL, Ismaila N, Beadle B, Caudell JJ, Chau N, Deschler D, Glastonbury C, Kaufman M, Lamarre E, Lau HY, Licitra L, Moore MG, Rodriguez C, Roshal A, Seethala R, Swiecicki P, Ha P. Management of Salivary Gland Malignancy: ASCO Guideline. J Clin Oncol. 2021 Jun 10;39(17):1909-1941. doi: 10.1200/JCO.21.00449. Epub 2021 Apr 26.
- Background: PubMed 32215577Phillips R, Shi WY, Deek M, Radwan N, Lim SJ, Antonarakis ES, Rowe SP, Ross AE, Gorin MA, Deville C, Greco SC, Wang H, Denmeade SR, Paller CJ, Dipasquale S, DeWeese TL, Song DY, Wang H, Carducci MA, Pienta KJ, Pomper MG, Dicker AP, Eisenberger MA, Alizadeh AA, Diehn M, Tran PT. Outcomes of Observation vs Stereotactic Ablative Radiation for Oligometastatic Prostate Cancer: The ORIOLE Phase 2 Randomized Clinical Trial. JAMA Oncol. 2020 May 1;6(5):650-659. doi: 10.1001/jamaoncol.2020.0147.
- Background: PubMed 33578204Lorini L, Ardighieri L, Bozzola A, Romani C, Bignotti E, Buglione M, Guerini A, Lombardi D, Deganello A, Tomasoni M, Bonini SA, Sigala S, Farina D, Ravanelli M, Bossi P. Prognosis and management of recurrent and/or metastatic head and neck adenoid cystic carcinoma. Oral Oncol. 2021 Apr;115:105213. doi: 10.1016/j.oraloncology.2021.105213. Epub 2021 Feb 9.
- Background: PubMed 34927307Tyan K, Bae JE, Lorch JH, Margalit DN, Tishler RB, Huynh MA, Jo VY, Haddad RI, Chau NG, Hanna GJ, Schoenfeld JD. Oligometastatic adenoid cystic carcinoma: Correlating tumor burden and time to treatment with outcomes. Head Neck. 2022 Mar;44(3):722-734. doi: 10.1002/hed.26964. Epub 2021 Dec 19.
- Background: PubMed 32484754Palma DA, Olson R, Harrow S, Gaede S, Louie AV, Haasbeek C, Mulroy L, Lock M, Rodrigues GB, Yaremko BP, Schellenberg D, Ahmad B, Senthi S, Swaminath A, Kopek N, Liu M, Moore K, Currie S, Schlijper R, Bauman GS, Laba J, Qu XM, Warner A, Senan S. Stereotactic Ablative Radiotherapy for the Comprehensive Treatment of Oligometastatic Cancers: Long-Term Results of the SABR-COMET Phase II Randomized Trial. J Clin Oncol. 2020 Sep 1;38(25):2830-2838. doi: 10.1200/JCO.20.00818. Epub 2020 Jun 2.
- Background: PubMed 30982687Palma DA, Olson R, Harrow S, Gaede S, Louie AV, Haasbeek C, Mulroy L, Lock M, Rodrigues GB, Yaremko BP, Schellenberg D, Ahmad B, Griffioen G, Senthi S, Swaminath A, Kopek N, Liu M, Moore K, Currie S, Bauman GS, Warner A, Senan S. Stereotactic ablative radiotherapy versus standard of care palliative treatment in patients with oligometastatic cancers (SABR-COMET): a randomised, phase 2, open-label trial. Lancet. 2019 May 18;393(10185):2051-2058. doi: 10.1016/S0140-6736(18)32487-5. Epub 2019 Apr 11.
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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.
The record lists no contact. Use the official record to reach the sponsor.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Stereotactic body radiotherapy (SBRT) in people with Adenoid Cystic Carcinoma and Oligometastatic, run by All India Institute of Medical Sciences.
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 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 28 Sep 2026. Status can change between updates, so confirm with the study contact before making plans.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
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?
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?
Progression-free survival (PFS) (time frame: 5 years). 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 NCT07845097, which also lists 6 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 2026.