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Metastatic Castrate-Resistant Prostate Cancer (mCRPC)Phase 1/2ASpiRENCT07002320

Investigating SX-682 in Combination With Apalutamide in Metastatic Castration-resistant Prostate Cancer

A Phase 1/2 study testing SX-682 and Apalutamide in people with Metastatic Castrate-Resistant Prostate Cancer (mCRPC), run by Institute of Cancer Research, United Kingdom at 4 sites in 2 countries.

Recruiting

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

Sites and contacts
Official record
Search all trials

Trial summary

ASpiRE will investigate the effect of the drug SX-682 in combination with Apalutamide in men suffering from metastatic castration-resistant prostate cancer (mCRPC). Read more about this study

Who is it for?
Ages 18 years and older, men only
What is being tested?
SX-682 and Apalutamide
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
78 participants
Where
4 sitesin 2 countries
Study dates
28 Apr 2025to Oct 2029
Phase
Phase 1/2
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
  • Men only
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Written informed consent and be capable of cooperating with treatment.
  • Age ≥ 18 years.
  • Histologically or biochemically confirmed adenocarcinoma of the prostate and with tumour tissue accessible for research analysis for this trial. Patients who have no histological diagnosis must be willing to undergo a biopsy to prove prostate adenocarcinoma.
  • Patients recruited to phase 1 dose escalation cohorts must have biopsiable disease and consent to mandatory pre- and post-treatment biopsies (baseline and on Cycle 2 Day 1).
  • Metastatic castration-resistant prostate cancer.
  • All patients must have documented resistance to 1 prior next generation antiandrogen therapy (NAAT) defined as:
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  • For phase 1 and phase 2 Cohorts:
  • Patients who have progressed after either enzalutamide, Apalutamide or darolutamide (having received a minimum of 12-weeks of enzalutamide, Apalutamide or darolutamide) will enter phase 1 or phase 2 cohorts directly. Patients that have previously received abiraterone but not an AR antagonist should receive a lead-in with Apalutamide on trial and receive the combination on progression through the lead-in.
  • Documented prostate cancer progression as assessed by the investigator with RECIST v1.1 and PCWG3 criteria (Section 3.5) with at least two of the following criteria:
  • Progression of soft tissue/visceral disease by RECIST v1.1 and/or,
  • Progression of bone disease by PCWG3 bone scan criteria and/or,
  • Progression of PSA by PCWG3 PSA criteria.
  • PSA ≥ 10ng/ml.
  • Received prior castration by orchiectomy and/or ongoing luteinizing hormone releasing hormone agonist treatment.
  • Ongoing androgen deprivation with serum testosterone < 50 ng/dL (< 1.7 nM).
  • Eastern Cooperative Oncology Group (ECOG) Performance Status of ≤2.
  • Documented willingness to use an effective means of contraception while participating in the study and for 6 months post last treatment dose.
  • Able to swallow the study drug.
  • All efforts should be made to discontinue steroid usage but up-to 5mg BD prednisolone (or equivalent) will be allowed.
  • Haematological and biochemical indices within the ranges shown below. These measurements must be performed within one week (Day -7 to Day 1) before the patient goes on trial.
  • Haemoglobin (Hb) ≥ 9.0 g/dL Absolute neutrophil count ≥ 1.5 x 109/L Platelet count ≥ 100 x 109/L WBC ≥ 3.0 x 109/L Calculated creatinine clearance ≥ 50 mL/min (uncorrected value) Serum bilirubin ≤ 1.5 x upper limit of normal (ULN) unless documented Gilbert's disease., in which case ≤ 3 x ULN is permissible Alanine aminotransferase (ALT) and aspartate aminotransferase (AST) ≤ 2.5 x (ULN) unless raised due to known metastatic liver disease in which case ≤ 5 x ULN is permissible

Who cannot join

  • Surgery, chemotherapy, or other anti-cancer therapy within 4 weeks prior to trial entry/randomisation into the study (with the exception of abiraterone, enzalutamide, Apalutamide or darolutamide). Any other therapy for prostate cancer, other than gonadotropin releasing hormone analogue therapy, such as progesterone, medroxyprogesterone, progestins or 5-alpha reductase inhibitors, must be discontinued at least 2 weeks before the first dose of the study drug.
  • Participation in another interventional clinical trial of an IMP within 4 weeks prior to trial entry. Participation in trials of licensed medications is allowed provided the medication is not a prohibited concomitant medication.
  • Prior limited field radiotherapy within 2 weeks and wide field radiotherapy within 4 weeks prior to trial entry.
  • Clinical and/or biochemical evidence of hyperaldosteronism or hypopituitarism.
  • History of seizures or other predisposing factors including, but not limited to, underlying brain injury, stroke, primary brain tumours, brain metastases and leptomeningeal disease, or alcoholism.
  • Malabsorption syndrome or other condition that would interfere with enteral absorption.
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  • Any of the following cardiac criteria:
  • QTcF interval > 470 msec.
  • Clinically important abnormalities including rhythm, conduction, or electrocardiogram (ECG) changes (left bundle branch block, third degree heart block).
  • Factors predisposing to QT prolongation including heart failure, hypokalaemia, congenital long QT syndrome, family history of prolonged QT syndrome, unexplained sudden death (under 40) and concomitant medications known to prolong QT interval.
  • Coronary artery bypass, angioplasty, vascular stent, myocardial infarction, angina, congestive heart failure (NYHA ≥ grade 2) i or transient ischaemic attack) in the last 6 months (see appendix 4 for NYHA scale).
  • Uncontrolled hypotension (systolic blood pressure < 90mmHg).
  • Uncontrolled hypertension on optimal medical management.
  • Clinically significant history of liver disease (Child-Pugh B or C, viral or other hepatitis, current alcohol abuse or cirrhosis).
  • Any other finding giving reasonable suspicion of a disease or condition that contraindicates the use of an investigational drug or that may affect interpretation of the results or renders the patients at high risk from treatment complications, e.g., patients with a hypersensitivity to the active substance or any of the excipients.
  • Malignancy other than prostate cancer within 5 years of trial entry except for adequately treated basal cell carcinoma.
  • Unresolved significant toxicity from prior therapy (except alopecia and grade 1 peripheral neuropathy).
  • Inability to comply with study and follow-up procedures.
  • Predominantly small cell or neuroendocrine differentiated (> 20% of cells) prostate cancer.
  • Immunocompromised patients.
  • Active or uncontrolled autoimmune disease requiring corticosteroid therapy.
  • History of thromboembolic disease within 12 months of commencement of trial.
  • At high-risk because of non-malignant systemic disease including active infection and any serious concurrent illness.
  • Any known intolerance to Apalutamide, SX-682, or to any constituents.
  • Symptoms of COVID-19 and/or documented COVID-19 infection.
  • Is taking any of the following prohibited medications:
  • Aminophylline/theophylline
  • Atypical antipsychotics (eg, clozapine, olanzapine, risperidone, ziprasidone)
  • Buproprion
  • Lithium
  • Meperidine and pethidine
  • Phenothiazine antipsychotics (eg, chlorpromazine, mesoridazine, thioridazine)
  • Tricyclic and tetracyclic antidepressants (eg, amitriptyline, desipramine, doxepin, imipramine, maprotiline, mirtazapine
  • Warfarin or coumarin-like anticoagulants
  • History of previous non-infectious pneumonitis requiring steroid treatment, or active non-infectious pneumonitis.
  • History of previous severe drug induced severe cutaneous reaction including but not limited to Steven-Johnson's syndrome/toxic epidermal necrolysis, drug reaction with eosinophilia and systemic symptoms (DRESS).

Trial locations and contacts

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

Aasia Hussain, PhD contact

02034376301

ASPIRE@icr.ac.uk

Bindumalini Rao Baikady, PhD contact

02034376033

ASPIRE@icr.ac.uk

4 sites in 2 countries

United Kingdom3 sites, 3 recruiting
  • Belfast Health and Social Care Trust

    Belfast, BT9 7AB

    Dr Vicky Coyle, 02895048492, v.coyle@qub.ac.uk

    Dr Vicky Coyle

    Recruiting
  • Cambridge University Hospitals NHS Foundation Trust

    Cambridge, CB2 0QQ

    Dr Simon Pacey, 07712201563, scp46@medschl.cam.ac.uk

    Dr Simon Pacey

    Recruiting
  • The Royal Marsden NHS Foundation Trust - Drug Development Unit

    Sutton, SM2 5PT

    Professor Johann de Bono, 02087224028, Johann.DeBono@icr.ac.uk

    Professor Johann de Bono

    Recruiting

Other trials in United Kingdom

Switzerland1 site, 1 recruiting
  • Oncology Institute of Southern Switzerland

    Bellinzona, CH6500

    Dr Ursula Vogl, 091 811 84 63, Ursula.Vogl@eoc.ch

    Professor Dr. Med. Andrea Alimonti, Translational Scientific Lead Coordinator at the IOR, andrea.alimonti@ior.usi.ch

    Recruiting

Other trials in Switzerland

About this study

Official title: ASpiRE: A Proof-of-mechanism and Proof-of-concept Clinical Trial Evaluating the Safety, Tolerability, Biological and Anti-tumour Activity of Apalutamide With Dual CXCR1 and CXCR2 Blockade by SX-682 for Men Suffering From Metastatic Castration-resistant Prostate Cancer (mCRPC)

ASpiRE will investigate the effect of the drug SX-682 in combination with Apalutamide in men suffering from metastatic castration-resistant prostate cancer (mCRPC).

Being tested
SX-682, Apalutamide
Keywords
Prostate cancer
Medical subject headings
Prostatic Neoplasms

What participants receive

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

  • SX-682Drug

    SX-682 is supplied as 100mg film coated tablets.

  • ApalutamideDrug

    Apalutamide is supplied as 60mg film coated tablets.

Study groups in NCT07002320
Study groupRoleWhat they receive
Phase I: Dose EscalationExperimentalPhase I will identify a biologically active and tolerable (safe) dose range of SX-682 in combination with Apalutamide in patients with metastatic castrate-resistant prostate cancer (mCRPC).
Receives: Drug: SX-682; Drug: Apalutamide
Phase II: Dose ExpansionExperimentalPhase I will investigate the anti-tumour activity of tolerable doses of SX-682 in combination with Apalutamide in patients with metastatic castrate-resistant prostate cancer (mCRPC). Patients will be treated at dose levels deemed to be tolerable and biologically active, based on safety and efficacy data from Dose Escalation.
Receives: Drug: SX-682; Drug: Apalutamide

What is being measured

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

  1. Biologically active and tolerable dose range

    The biological active and tolerable combination doses are those that satisfy observed DLT rate<33% and demonstrate reduction in myeloid derived suppressor cells (MDSCs).

    Measured: From start of treatment to end of Cycle 2 Day 1 (each cycle is 28 days)

  2. Anti-tumour activity of SX-682 when administered with Apalutamide

    Response rate on the basis of Prostate Cancer Working Group 3 (PCWG3), and/or Response Evaluation Criteria in Solid Tumors (RECIST) v1.1 criteria.

    Measured: 24 months

Secondary outcomes (11)
  1. Safety and tolerability profile as assessed by Common Terminology Criteria for Adverse Events (CTCAE) v5.0

    Measured: 12 months

  2. Steady state pharmacokinetic parameters (CSSmin and CSSMax)

    Measured: At the end of Cycle 2 Day 1 (each cycle is 28 days).

  3. Number of patients with Prostate Specific Antigen (PSA) decline greater than 50%

    Measured: 24 months

  4. Soft tissue objective response (CR or PR) by RECIST v1.1

    Measured: From date of enrolment until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 36 months.

  5. Changes in circulating tumour DNA (ctDNA) tumour fractions (TF).

    Measured: 24 months

  6. Progression free survival

    Measured: From date of enrolment until the date of first documented progression or date of death from any cause, whichever came first, assessed up to 60 months

  7. Overall survival

    Measured: From date of enrolment to date of death from any cause, assessed up to 60 months.

  8. Relative changes in circulating neutrophils

    Measured: 24 months

  9. Impact on quality of life using Brief Pain Inventory (BPI) Questionnaire

    The BPI questionnaire assesses pain severity and impact of pain on daily functioning. Higher scores indicate greater pain severity and interference with daily life.

    Measured: 24 months

  10. Impact of treatment toxicity using Functional Assessment of Chronic Illness Therapy (FACIT)-GP5 Questionnaire

    Score between 0-4 with high score meaning patients are bothered by treatment side effects

    Measured: 24 months

  11. Relative changes in intra-tumour myeloid derived suppressor cells (MDSCs)

    Measured: 24 months

Timeline

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

  1. First posted3 Jun 2025
  2. Study start28 Apr 2025
  3. Primary completionOct 2029 (estimated)
  4. Study completionOct 2029 (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 1/2
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Model description
Phase 1 will use a 3+3 design to investigate escalating doses of SX-682 in combination with Apalutamide.
Masking
None (open label)
Enrolment
78 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07002320
Sponsor's protocol ID
CCR6041
Other IDs
1008729
Acronym
ASpiRE
Status last verified
Sep 2026
First submitted
6 May 2025
Last updated
8 Sep 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Questions about this trial

What is this clinical trial studying?

A Phase 1/2 study testing SX-682 and Apalutamide in people with Metastatic Castrate-Resistant Prostate Cancer (mCRPC), run by Institute of Cancer Research, United Kingdom at 4 sites in 2 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 21 inclusion and 36 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 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 4 sites in United Kingdom, Switzerland. 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 combined phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

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?

Contact Aasia Hussain, PhD (02034376301, ASPIRE@icr.ac.uk), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Biologically active and tolerable dose range (time frame: From start of treatment to end of Cycle 2 Day 1 (each cycle is 28 days)). 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?
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 Sep 2026.

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