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Solid TumorPhase 1NCT07086768

Dose-Escalation and Dose-Expansion Study of BSI-082 Monotherapy and Combined Therapy in Patients With Advanced or Metastatic Solid Tumors

A Phase 1 study testing BSI-082 and Trastuzumab deruxtecan in people with Solid Tumor and Advanced Solid Tumor, run by Lei Zheng at 1 site in United States.

Recruiting

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

Sites and contacts
Official record
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Trial summary

This is a study that will enroll patients with cancer who have tumors that may have spread. The patients will know what medication they are being given. There will be 2 parts to the study. For the first part of the study only one medication will be taken, and the dose changed to a higher dose over time. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
BSI-082 and Trastuzumab deruxtecan
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
57 participants
Where
1 siteUnited States
Study dates
26 Jan 2026to 7 Aug 2028
Phase
Phase 1
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

  • Read, understood, and provided written informed consent and must be willing to comply with all study requirements and procedures.
  • Adults ≥ 18 years of age at the time of informed consent form is signed.
  • Patients with histologically or cytologically confirmed locally advanced or metastatic solid tumors who have relapsed, or been non-responsive, or have developed disease progression through standard systemic therapy, or have been ineligible for standard systemic therapy known to confer clinical benefit.
  • Patients having an FDA-approved indication for T-DXd (only for Phase 1b dose expansion).
  • With 4 weeks or 5 half-lives (whichever is shorter) of prior anticancer therapies (only for Phase 1a dose escalation).
  • Life expectancy ≥ 12 weeks.
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  • Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) of 0 or 1.
  • Presence of at least 1 measurable lesion based on computed tomography (CT) or magnetic resonance imaging (MRI) per RECISIT V1.1.
  • Has a left ventricular ejection fraction (LVEF) ≥50% by either an echocardiogram (ECHO) or multigated acquisition (MUGA) scan within 28 days before enrollment.
  • Main organ functions meet the following criteria:
  • Absolute Neutrophil Count (ANC) ≥ 1.5×109/L
  • Platelet counts ≥ 100×109/L
  • Hemoglobin ≥ 9 g/dL (without recent red blood cell transfusion within 2 weeks prior to study entry)
  • Creatinine clearance ≥ 40 mL/min per the Cockcroft and Gault formula.
  • AST ≤ 2.5×Upper Limit Normal (ULN or patients with hepatic metastasis ≤ 5×ULN
  • ALT ≤ 2.5×ULN or patients with hepatic metastasis ≤ 5×ULN
  • Total Bilirubin ≤ 1.5×ULN, except for patients with Gilbert's syndrome from whom total bilirubin < 3.0 × ULN or direct bilirubin < 1.5 × ULN
  • Both male and female of childbearing potential patients enrolled in this trial as well as their partners must agree to use highly effective contraception during the study and for at least 10 months after discontinuing study treatment. Patients and/or partners who are surgically sterile or postmenopausal are exempt from this requirement.

Who cannot join

  • Known allergies, hypersensitivity, or intolerance to monoclonal antibodies (mAbs) or formulation components of BSI-082.
  • Prior therapy with any SIRPα or CD47 targeting agents.
  • Has active autoimmune disease or a documented history of autoimmune disease, or history of potential autoimmune syndrome that required systemic steroids or immunosuppressive medications, except for patients with vitiligo, endocrinopathies, type 1 diabetes, or patients with resolved childhood asthma/atopy or other syndromes which would not be expected to recur in the absence of an external trigger (e.g., drug-related serum sickness or post-streptococcal glomerulonephritis). Patients with mild asthma who require intermittent use of bronchodilators (such as albuterol) and those who have not been hospitalized for asthma in the preceding 3 years will not be excluded from this study.
  • Toxicities of prior anticancer therapies have not resolved to ≤ Grade 1 or to baseline) prior to the first dose of study treatment (excluding alopecia, vitiligo, endocrinopathies on stable hormone replacement therapy, Grade 2 neuropathy from taxanes or platinum containing therapies and Grade 2 hearing loss from platinum-containing therapies).
  • Has other malignancy, except for adequately treated basal or squamous cell skin cancer or in situ cancers; or any other cancer from which the patient has been disease-free for at least 5 years.
  • Occurrence of immune related toxicity necessitating permanent discontinuation or immune related toxicity that required treatment with a TNF inhibitor (e.g., infliximab) in patients with previous immunotherapy.
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  • Medical history of myocardial (MI) within 6 months before study enrollment, symptomatic congestive heart failure (CHF) (New York Heart Association [NYHA] Class II to IV).
  • Any of the following within 6 months of enrollment: cerebrovascular accident, transient ischemic attack, other arterial thromboembolic events, or pulmonary embolism.
  • Has a QT interval corrected with Fridericia's formula (QTcF) prolongation to >470 ms based on average of the screening triplicate 12-lead electrocardiogram (ECG).
  • Uncontrolled hypertension (resting systolic blood pressure>180 mmHg or diastolic blood pressure>110 mmHg) and/or severe arrhythmia within 28 days before enrollment.
  • Has a history of (non-infectious) interstitial lung disease (ILD)/pneumonitis that required steroids, has current ILD/pneumonitis, or where suspected ILD/pneumonitis cannot be ruled out by imaging at Screening.
  • Has lung-specific intercurrent clinically significant illnesses including, but not limited to, any underlying pulmonary disorder.
  • Any autoimmune, connective tissue or inflammatory disorders where there is documented or suspicion of pulmonary involvement at the time of screening.
  • Prior complete pneumonectomy.
  • Has spinal cord compression or clinically active central nervous system metastases, defined as untreated and symptomatic, or requiring therapy with corticosteroids or anticonvulsants to control associated symptoms.
  • Has uncontrolled infection requiring intravenous (IV) antibiotics, antivirals, or antifungals.
  • Has active primary immunodeficiency or active human immunodeficiency virus (HIV) infection as determined by plasma HIV ribonucleic acid (RNA) viral load and CD4 count. For the Dose-expansion phase only, participants with undetectable viral load or normalized CD4 count (CD4+ T-cell counts ≥ 350 cells/μL) and no opportunistic infection within the past 12 months will be eligible. These participants must be on established antiretroviral therapy for at least 4 weeks and have an HIV viral load <400 copies/mL prior to enrollment.
  • Has active hepatitis B or C infection. Participants with past hepatitis C virus (HCV) infection and positive for HCV antibody are eligible only if polymerase chain reaction (PCR) is negative for HCV RNA. Participants with past or resolved hepatitis B virus infection are eligible only if confirmed by the Investigator.
  • Has received a live, attenuated vaccine (messenger ribonucleic acid [mRNA] and replication-deficient adenoviral vaccines are not considered live, attenuated vaccines) within 30 days prior to first exposure to study drug(s).
  • Has any other acute or chronic medical or psychiatric condition or laboratory abnormality that could increase the risk associated with trial participation or trial drug administration or could interfere with the interpretation of trial results would make the patient inappropriate for entry into the trial.
  • Has substance abuse or any other medical conditions such as clinically significant cardiac or psychological conditions, that may interfere with the participant's participation in the clinical study or evaluation of the clinical study results.
  • Women who are pregnant or lactating. All female patients of childbearing potential must have a negative serum pregnancy test prior to the first dose of study treatment.

Trial locations and contacts

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

John Sarantopoulos, MD contact

210 450 5946

sarantopoulo@uthscsa.edu

United States1 site, 1 recruiting
  • University of Texas Health Science Center at San Antonio

    San Antonio, Texas, 78229

    Epp Goodwin, 210-450-5798, goodwin@uthscsa.edu

    John Sarantopoulos, MD, 210-450-5946, sarantopoulo@uthscsa.edu

    Recruiting

Other trials in United States

About this study

Official title: A Phase Ia/Ib, 2-Part, Dose-Escalation and Dose-Expansion Study of BSI-082 Monotherapy and Combined Therapy in Patients With Advanced or Metastatic Solid Tumors

This is a study that will enroll patients with cancer who have tumors that may have spread. The patients will know what medication they are being given.

There will be 2 parts to the study. For the first part of the study only one medication will be taken, and the dose changed to a higher dose over time.

In the second part of the study tow medications will be taken and the dose of the medication may be changed to a higher dose.

Read the detailed description

Phase 1a monotherapy dose-escalation part will establish the safety and tolerability of BSI-082 as single agent. Up to 30 patients with locally advanced or metastatic solid tumors who have relapsed, or been non-responsive, or have developed disease progression through standard systemic therapy, or have been ineligible for standard systemic therapy known to confer clinical benefit will be enrolled. Recommended dose for expansion (RDE) will be determined in this phase and used in the phase 1b study.

Phase 1b combination dose-escalation and dose-expansion part will enroll up to 27 patients with Her2 positive locally advanced solid tumors that are indicated for the Standard of care T-DXd treatment.

Being tested
BSI-082, Trastuzumab deruxtecan
Keywords
anti-SIRPα antibody, anti-signal regulatory protein alpha, Dose Escalation, Dose Expansion
Medical subject headings
Neoplasm Metastasis

What participants receive

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

  • BSI-082Drug

    BSI-082 is a sterile solution for injection which contains the active ingredient at the nominal concentration of 50.0 mg/mL. T

  • Trastuzumab deruxtecanOther

    Also called Standard of care treatment with

    T-DXd: Administrate as per the drug package insert and Investigator's guidance, and T-DXd can be continued after the patients been taken off from the study.

Study groups in NCT07086768
Study groupRoleWhat they receive
Cohort 1: monotherapyExperimentalBSI-082 0.3mg/kg will be administrated as an IV infusion on Day 1 of each 21-day treatment cycle
Receives: Drug: BSI-082
Cohort 2: monotherapyExperimentalBSI-082 1mg/kg will be administrated as an IV infusion on Day 1 of each 21-day treatment cycle
Receives: Drug: BSI-082
Cohort 3: monotherapyExperimentalBSI-082 3mg/kg will be administrated as an IV infusion on Day 1 of each 21-day treatment cycle
Receives: Drug: BSI-082
Cohort 4: monotherapyExperimentalBSI-082 10mg/kg will be administrated as an IV infusion on Day 1 of each 21-day treatment cycle
Receives: Drug: BSI-082
Cohort 5: monotherapyExperimentalBSI-082 20mg/kg will be administrated as an IV infusion on Day 1 of each 21-day treatment cycle
Receives: Drug: BSI-082
Cohort b1: combined therapyExperimentalLower dose cohort of BSI-082 with established dose of T-DXd
Receives: Drug: BSI-082; Other: Trastuzumab deruxtecan
Cohort b2: combined therapyExperimentalHigher dose cohort of BSI-082 with established dose of T-DXd
Receives: Drug: BSI-082; Other: Trastuzumab deruxtecan

What is being measured

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

  1. Number of Dose limiting toxicity Events

    Adverse events (AEs) as characterized by type, frequency, severity (as graded by national cancer institute common terminology criteria for adverse events, NCI CTCAE V5.0), timing, seriousness, and relationship to study treatment.

    •And Vital sign abnormalities and laboratory abnormalities as characterized by type, frequency, severity (as graded by NCI CTCAE V5.0) and timing.

    Measured: Baseline to 42 days

Timeline

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

  1. First posted25 Jul 2025
  2. Study start26 Jan 2026
  3. Primary completion7 Aug 2027 (estimated)
  4. Study completion7 Aug 2028 (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
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Sequential
Model description
This is a phase Ia/Ib, open-label, dose-escalation and dose-expansion study designed to evaluate BSI-082 monotherapy and combined therapy with Trastuzumab deruxtecan (T-DXd) in patients with locally advanced or metastatic solid tumors. A Phase 1a/1b, open-label, dose-escalation and dose expansion study. This study will have 2 parts: Phase Ia monotherapy dose-escalation and Phase Ib combination and dose-expansion.A traditional 3+3 method will be applied for dose escalation phase for Phase 1a. Phase 1b will have 2 dose cohorts, a lower dose and a higher dose cohort.
Masking
None (open label)
Enrolment
57 participants (estimated)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07086768
Sponsor's protocol ID
CTMS# 25-0042
Status last verified
Oct 2026
First submitted
18 Jul 2025
Last updated
15 Oct 2026
Results posted
No
Data monitoring committee
Yes
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Any manuscript, abstract or other publication or presentation of results or information arising in connection with the trial (including any ancillary trial involving trial subjects) must be prepared in conjunction with the Mays Cancer Center Data Safety Monitoring Board, the trial's statistician, and verification that all study data to be used for the publication has been monitored for accuracy by the Mays Quality Assurance (QA) team prior to publication or presentation.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing BSI-082 and Trastuzumab deruxtecan in people with Solid Tumor and Advanced Solid Tumor, run by Lei Zheng 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 18 inclusion and 22 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 15 Oct 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.

What does this 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.

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 John Sarantopoulos, MD (210 450 5946, sarantopoulo@uthscsa.edu), or a site near the patient. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Dose limiting toxicity Events (time frame: Baseline to 42 days). 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 15 Oct 2026.

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