ClinicalTrials.gg
RecruitingNCT07371663Updated Jan 28, 2026

An Phase Ib/II Clinical Trial of TCC1727 Combination Therapy in Advanced Solid Tumors

A Phase 1/2 interventional study of TCC1727 tablet 90mg and TCC1727 tablet 120mg in Solid Cancers, NSCLC (Advanced Non-small Cell Lung Cancer) and Gastric (Stomach) Cancer, sponsored by Beijing Tide Pharmaceutical Co., Ltd. Recruiting at 3 sites in China. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-01-28.

Sponsored by Beijing Tide Pharmaceutical Co., Ltd (part of Sino Biopharmaceutical Limited) · Phase 1/2, Interventional, and Treatment

From the registry’s dates

  • Started Dec 2025; still recruiting 11 months later.
Phase
Phase 1/2
Study type
Interventional
Enrollment
266
Allocation
Non-randomized
Ages
18 Years and older
Sex
All
01

Study summary

This is a Phase Ib/II clinical study. The Phase Ib dose-escalation study aims to evaluate and determine the recommended Phase II dose (RP2D) of TCC1727 in combination with benmelstobart /olaparib /topotecanfor patients with advanced solid tumors.

The Phase II expansion study will assess the efficacy and safety of TCC1727 combined with benmelstobart /olaparib/topotecanin selected advanced solid tumor indications.

The study pre-specifies three treatment combinations, with Combination 1 (TCC1727 + benmelstobart) being prioritized for initial evaluation. The decision to proceed with Combination 2 and Combination 3will be based on clinical data from Combination 1.

02

Conditions studied

  • Solid Cancers
  • NSCLC (Advanced Non-small Cell Lung Cancer)
  • Gastric (Stomach) Cancer
  • Endometrial Cancer
  • Malignant Melanoma

Keywords

  • Ataxia Telangiectasia and Rad3-related protein inhibitor
  • Advanced solid tumor
03

In context

Carcinoma, Non-Small-Cell Lung

7,620 studies on the registry are indexed under Carcinoma, Non-Small-Cell Lung; 1,838 are open to participants now.

This study's planned enrollment of 266 is above the median of 62 across 6,019 interventional studies indexed under Carcinoma, Non-Small-Cell Lung.

Browse Carcinoma, Non-Small-Cell Lung studies →

Lead sponsor

Beijing Tide Pharmaceutical Co., Ltd is the lead sponsor of 14 studies on the registry; 11 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • -Voluntarily participate in this study and sign the form.
  • At the time of signing the informed consent, subjects must be ≥18 years of age (inclusive).
  • Subjects must have or cytologically confirmed advanced or solid tumors and have experienced disease progression following prior standard anti-tumor therapy; or subjects must have no available standard therapy, be intolerant to or refuse standard therapy, or meet the specific requirements for the corresponding phase and group as follows:

    • Phase Ib :Subjects with advanced, recurrent, or solid tumors, which may include (but are not limited to) the specific tumor types in Phase II.
    • Phase II Study:Based on different combination therapy groups, subjects with the following specific tumor types (different population cohorts):

TCC1727 combined with Benmelstobart Group:

The study will enroll subjects with advanced solid tumors lacking standard therapies, including but not limited to non-small cell lung cancer (NSCLC), endometrial cancer, and other advanced solid tumors (e.g., colorectal cancer, urothelial carcinoma, gastric cancer, and gastroesophageal junction cancer):

Cohort 1 (NSCLC):Patients with histologically or cytologically confirmed locally advanced or metastatic NSCLC who are eligible for second- or therapy. Patients must have received prior therapy with an anti-PD-(L)1-containing regimen (either as monotherapy or in combination) and a platinum-based doublet regimen for locally advanced or metastatic NSCLC.

Subgroup 1: ATM mutation. Subgroup 2: ATM wild-type, with or without other DDR functional defects.

Cohort 2 (Endometrial Cancer):Patients with histopathologically confirmed recurrent or metastatic advanced endometrial cancer who have received at least one prior platinum-based chemotherapy and (PD-1 or PD-L1) therapy (sequential or concurrent therapy allowed; sequential therapy refers to platinum-based chemotherapy followed by immune checkpoint inhibitor maintenance therapy).

Subgroup 1: DDR functional defect, ATM wild-type or mutated. Subgroup 2: DDR functional normal.

Cohort 3 (Other Advanced Solid Tumors):Patients with histologically or cytologically confirmed advanced malignant solid tumors who have failed standard therapy, are intolerant to standard therapy, have no standard therapy available, or for whom standard therapy is currently unsuitable.

Subgroup 1: DDR functional defect, ATM wild-type or mutated. Subgroup 2: DDR functional normal.

TCC1727 combined with Olaparib Tablets Group:

The study will enroll subjects with histopathologically confirmed recurrent ovarian cancer:

Cohort 4 (Ovarian Cancer):Subjects with histopathologically confirmed recurrent epithelial ovarian cancer, primary peritoneal cancer, or fallopian tube cancer:

Subgroup 1: Subjects who have experienced disease progression after prior Olaparib Tablets therapy (maintenance or subsequent therapy). Subjects must not have received further treatment after progression on Olaparib Tablets.

Subgroup 2: Subjects who have not received Olaparib Tablets and have primary platinum-resistant/refractory disease (recurrence within 6 months of last platinum-based therapy). Subjects must have received ≤3 prior lines of therapy since developing platinum resistance.

TCC1727 combined with Topotecan Hydrochloride for Injection Group:

The study will enroll subjects with histopathologically or cytologically confirmed small cell lung cancer (SCLC):

Cohort 5 (SCLC):Subjects who have progressed after platinum-based chemotherapy combined with PD-(L)1 therapy, or subjects with extensive-stage SCLC who have relapsed or progressed within ≤6 months after first-line therapy.

  • At least one (per v1.1; lesions previously treated with local therapy may be considered target lesions if they show clear progression per RECIST v1.1).
  • Subjects must provide sufficient tumor tissue samples, including but not limited to fresh specimens (preferred) or formalin-fixed, paraffin-embedded (FFPE) tumor tissue obtained within approximately 24 months prior to randomization, unstained FFPE slides, or core needle tissue for biomarker testing.
  • performance status score of 0-1 within 7 days prior to the first dose of study drug.
  • Expected survival ≥12 weeks.
  • Ability to swallow tablets whole and maintain this method of administration.
  • Organ function within the following ranges within 7 days prior to the first dose of study drug (no blood component or growth factor therapy within 14 days prior to the first dose):

    1. (ANC) ≥1.5 × 10⁹/L;
    2. White blood cell count (WBC) ≥3.0 × 10⁹/L;
    3. count ≥100 × 10⁹/L;
    4. (Hb) ≥90 g/L;
    5. Serum albumin ≥30 g/L;
    6. Total ≤1.5 × (≤2.0 × ULN for hepatocellular carcinoma or subjects with liver metastases);
    7. and AST ≤3 × ULN (≤5.0 × ULN for hepatocellular carcinoma or subjects with liver metastases);
    8. Alkaline phosphatase (ALP) ≤2.5 × ULN (≤5 × ULN if bone metastases are present);
    9. Serum creatinine ≤1.5 × ULN or (CrCL) ≥60 mL/min (Cockcroft-Gault formula);
    10. ≤1.5 × ULN and INR or PT ≤1.5 × ULN (for subjects not receiving anticoagulation therapy);
    11. \<450 ms (male) or \<470 ms (female), ≥50%.
  • For non-sterilized or fertile female subjects, medically approved (e.g., intrauterine device, oral contraceptives, or condoms) must be used during the study and for 6 months after the last dose. Non-sterilized female subjects must have a negative serum HCG test within 72 hours before the first dose and must not be breastfeeding. Male subjects with fertile partners must use effective contraception during the study and for 3 months after the last dose.

Exclusion criteria

Exclusion Criteria:

  • Known primary central nervous system (CNS) tumors (including meningeal tumors); symptomatic , spinal cord compression, carcinomatous meningitis, or uncontrolled CNS metastases. Exceptions: Subjects with completely resected and/or irradiated CNS metastases that are stable or improved for ≥4 weeks before screening (no evidence of brain edema and no need for or anticonvulsants). Asymptomatic brain metastases \<1 cm in diameter without surrounding edema are also allowed.
  • Major surgery, radiotherapy, chemotherapy, or other anti-tumor therapy completed \<4 weeks before the first dose (exceptions: small-molecule anti-tumor therapy completed >5 half-lives or >10 days before the first dose, whichever is longer; palliative radiotherapy completed >2 weeks before the first dose).
  • Use of strong inhibitors or inducers within 14 days before the first dose (e.g., rifampin, rifapentine, St. John's wort, carbamazepine, phenytoin, barbiturates, ketoconazole, itraconazole, clarithromycin, voriconazole, atazanavir, ritonavir, saquinavir, grapefruit juice).
  • Any unresolved ≥Grade 2 toxicity (per v5.0) from prior anti-tumor therapy (except alopecia, pigmentation, or laboratory abnormalities meeting inclusion criteria).
  • Inability to swallow tablets, gastrointestinal dysfunction, or any condition that may affect drug absorption (per investigator's judgment).
  • Uncontrolled severe diseases, including:

    1. Poorly controlled hypertension (systolic BP ≥150 mmHg or diastolic BP ≥100 mmHg);
    2. cardiovascular disease within 6 months before the first dose (e.g., myocardial infarction, severe/unstable angina, stroke, ≥Grade 2 congestive heart failure [ classification]);
    3. Arrhythmia (≥Grade 2 per CTCAE v5.0, including ≥450 ms [male] or ≥470 ms [female]);
    4. Unexplained fever ≥38.5°C within 14 days before the first dose or active infection requiring systemic therapy;
    5. Active viral hepatitis ( ≥500 IU/mL for HBsAg-positive and/or anti-HBc-positive subjects; -positive for anti-HCV-positive subjects; antiviral therapy required for eligible HBV/HCV-positive subjects);
    6. Active syphilis;
    7. Active tuberculosis;
    8. Immunodeficiency (e.g., -positive, congenital/acquired immunodeficiency, organ transplant history);
    9. Poorly controlled diabetes (fasting blood glucose >10 mmol/L).
  • Uncontrolled pleural effusion, pericardial effusion, ascites, or recurrent ascites requiring drainage within 28 days before the first dose.
  • Significant bleeding symptoms or tendency within 3 months before the first dose.
  • Chronic systemic corticosteroid therapy (>10 mg prednisone equivalent daily) or therapy within 14 days before the first dose.
  • Active disease requiring systemic treatment within the past 2 years (e.g., immunomodulators, corticosteroids, immunosuppressants). Replacement therapy (e.g., thyroxine, insulin, physiologic corticosteroid replacement for adrenal/pituitary insufficiency) is allowed. (Applies only to Ib Phase and Phase II TCC1727 + Benmelstobart groups.)
  • History of severe allergic reactions to study drugs or their .
  • Other within 3 years before screening (except cured basal cell carcinoma, cervical carcinoma in situ, or thyroid papillary carcinoma).
  • Prior ≥Grade 3 immune-mediated adverse events (imAEs) or permanent discontinuation due to imAEs during anti-PD-(L)1 therapy.
  • Prior treatment with TCC1727, other ATR inhibitors, or cell cycle (e.g., ATM inhibitors, WEE1 inhibitors, CHK1/CHK2 inhibitors).
  • Other severe physical/mental illnesses or factors that may increase study risk or interfere with results, or any condition deemed unsuitable by the investigator.

Additional exclusions:

  • Phase II Cohort 1 (NSCLC):Exclude subjects with known EGFR, ALK, ROS1, BRAF, MET, RET, or RAS mutations; exclude mixed NSCLC/SCLC histology.
  • Phase II Cohort 2 (Endometrial Cancer):Exclude uterine carcinosarcoma, endometrial leiomyosarcoma, or endometrial stromal sarcoma.
  • Phase II Cohort 3 (Other Solid Tumors):Exclude KRAS/NRAS/BRAF mutations or MSI-H status.
  • Phase II Cohort 4 (Ovarian Cancer) \& Ib Phase TCC1727 + Olaparib Tablets: Exclude prior myelodysplastic syndrome or acute myeloid leukemia.
Terms in these criteria, in plain language(35)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Histologically or cytologically confirmed

The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).

Your pathology report is the document that shows this.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Relapsed and refractory

Relapsed: the illness came back after treatment had worked. Refractory: it did not respond to treatment, or stopped responding while still on it.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

PD-1, PD-L1 and checkpoint inhibitors

PD-1, PD-L1 and CTLA-4 are proteins that act as brakes on the immune system. Checkpoint inhibitors, such as pembrolizumab or nivolumab, block them so the immune system can attack a cancer.

PD-L1 can also be measured in a tumour sample. Some scores count stained tumour cells only (TPS); others also count certain immune cells (CPS). The study names the score and the minimum it uses.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

RECIST

The standard rules for measuring tumours on CT or MRI scans, to tell whether a cancer is shrinking, stable or growing during treatment.

“Measurable disease per RECIST 1.1” usually means at least one tumour 10 mm or more at its longest on a CT scan, or a lymph node 15 mm or more across its short axis.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

ECOG performance status

A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.

Absolute neutrophil count (ANC)

The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.

It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.

Platelets

Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.

Hemoglobin (Hb)

The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

INR, PT and aPTT (clotting tests)

Blood tests of how long blood takes to clot. The INR is the prothrombin time (PT) put on a common scale; about 1 is usual for someone not taking a blood thinner.

Criteria often make an exception for people on a blood thinner such as warfarin, whose INR is raised on purpose.

QT and QTc

On an ECG, the QT interval is the time the heart’s lower chambers take to activate electrically and recover in each beat. QTc is that time adjusted for heart rate (QTcF by Fridericia’s formula, QTcB by Bazett’s). Some medicines lengthen it, and a long QTc can raise the risk of a dangerous heart rhythm.

The study may name a correction formula and a limit in milliseconds, often around 450–480.

LVEF (left ventricular ejection fraction)

The share of blood the heart’s main pumping chamber (the left ventricle) pushes out with each beat, measured by an echocardiogram (heart ultrasound) or a MUGA scan. About 50–70% is normal.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Brain metastases

Cancer deposits in the brain from a cancer that started elsewhere in the body (CNS metastases include the spinal cord).

Studies differ: some leave out any brain metastases, some accept ones treated and stable for some weeks. Check what this study allows.

Corticosteroids (steroids)

Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.

Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

CYP3A (CYP3A4) inhibitors and inducers

CYP3A is a group of enzymes, mainly CYP3A4, in the liver and gut that break down many medicines. Some medicines, supplements and foods (grapefruit, St John’s wort) slow them down or speed them up, which changes how much of a study drug stays in the body.

Studies list them so they can be avoided or switched; bring a list of everything you take, including supplements.

CTCAE grade

The US National Cancer Institute’s scale of how severe an adverse event is — any unwanted medical event during a study, such as a symptom, an illness or an abnormal test result, whether or not a treatment caused it. Whether it did is judged separately.

1
Mild.
2
Moderate.
3
Severe.
4
Life-threatening.
5
Death due to the event.

“Side effects of earlier treatment resolved to grade 1 or less” means they have settled to mild or gone.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Excipients

The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Phase
Phase 1 / Phase 2
Primary purpose
Treatment
Allocation
Non-randomized
Intervention model
Sequential assignment
Masking
None (open label)
Enrollment
266 participants (estimated)

Study arms

  • Experimental
    TCC1727 + benmelstobart (Dose Level 1)

    TCC1727 tablets 90 mg orally twice daily (bid) in 21-day cycles combined with benmelstobart injection 1200 mg by intravenous infusion in 21-day cycles until disease progression

    Drug: TCC1727 tablet 90mg · Combination Product: benmelstobart Injection

  • Experimental
    TCC1727 + benmelstobart (Dose Level 2)

    TCC1727 tablets 120 mg orally twice daily (bid) in 21-day cycles combined with benmelstobart injection 1200 mg by intravenous infusion in 21-day cycles until disease progression

    Drug: TCC1727 tablet 120mg · Combination Product: benmelstobart Injection

  • Experimental
    TCC1727 + benmelstobart (Dose Level 3)

    TCC1727 tablets 160 mg orally twice daily (bid) in 21-day cycles combined with benmelstobart injection 1200 mg by intravenous infusion in 21-day cycles until disease progression

    Drug: TCC1727 tablet 160mg · Combination Product: benmelstobart Injection

Interventions

  • DrugTCC1727 tablet 90mg

    TCC1727 tablets 90 mg, orally, twice daily (bid), continuous dosing in 21-day cycles until disease progression

  • DrugTCC1727 tablet 120mg

    TCC1727 tablets 120 mg, orally, twice daily (bid), continuous dosing in 21-day cycles until disease progression

  • DrugTCC1727 tablet 160mg

    TCC1727 tablets 160 mg, orally, twice daily (bid), continuous dosing in 21-day cycles until disease progression

  • Combination productbenmelstobart Injection

    Administer 1200 mg per dose via intravenous infusion on Day 1 of every 3-week cycle until disease progression.

This study also gives Olaparib. No intervention listed here names it: that was found by reading the record.

06

What researchers measure

Primary outcomes

  1. Phase Ib:To determine dose-limiting toxicity (DLT) at each dose level

    Dose Escalation To observe the tolerability and safety of TCC1727 combination therapy.

    Time frame: 21 Days

  2. MTD

    The maximum tolerated dose (MTD) of TCC1727 in combination with benmelstobart/olaparib/topotecan will be determined based on safety, tolerability, kinetics, preliminary efficacy, and other available data

    Time frame: 21 days

  3. RP2D

    The recommended Phase II dose (RP2D) of TCC1727 in combination with benmelstobart/olaparib/topotecan will be determined based on safety, tolerability, kinetics, preliminary efficacy, and other available data

    Time frame: 21 days

  4. Number of participants with treatment-related adverse events as assessed by CTCAE v5.0

    Adverse events (AEs) were assessed according to NCI-CTCAE v5.0, including severity grading of abnormal findings in laboratory tests, vital signs, physical examinations, and electrocardiograms (ECGs) from signing of informed consent through the end of the safety follow-up period or prior to the start of a new anticancer therapy

    Time frame: 21days

Secondary outcomes

  1. Assess objective response rate (ORR: complete response + partial response), based on RECIST 1.1

    Efficacy evaluation was performed every 6 weeks (± 7 days), extended to 9 weeks (± 7 days) after 8 cycles for efficacy evaluation, and patients were assessed for tumor by the investigator according to RECIST v1.1

    Time frame: 6 month

  2. PK parameters of TCC1727

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727: Cmax

    Time frame: Day1, Day22

  3. PK parameters of TCC1727

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727: Tmax

    Time frame: Day1, Day22

  4. PK parameters of TCC1727

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727: Trough concentration (minimum concentration at steady state)-Ctrough

    Time frame: Day1, Day22

  5. AUC0-t

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727:AUC0-t

    Time frame: Day1, Day22

  6. AUC0-∞

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727:AUC0-∞

    Time frame: Day1, Day22

  7. PK parameters of TCC1727

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727:t1/2

    Time frame: Day1, Day22

  8. PK parameters of TCC1727

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727:Clearance

    Time frame: Day1, Day22

  9. PK parameters of TCC1727

    Blood samples were collected before and after administration of C1, C2 to evaluate the kinetic (PK) parameters of TCC1727:Volume of distribution at steady state (Vss)

    Time frame: Day1, Day22

  10. Assess disease control rate (DCR) based on RECIST 1.1;

    Efficacy evaluation was performed every 6 weeks (± 7 days), extended to 9 weeks (± 7 days) after 8 cycles for efficacy evaluation, and patients were assessed for tumor by the investigator according to RECIST v1.1

    Time frame: 6 month

  11. Assess duration of response (DoR) based on RECIST 1.1

    Efficacy evaluation was performed every 6 weeks (± 7 days), extended to 9 weeks (± 7 days) after 8 cycles for efficacy evaluation, and patients were assessed for tumor by the investigator according to RECIST v1.1

    Time frame: 6 month

  12. Assess time to response (TTR) based on RECIST 1.1

    Efficacy evaluation was performed every 6 weeks (± 7 days), extended to 9 weeks (± 7 days) after 8 cycles for efficacy evaluation, and patients were assessed for tumor by the investigator according to RECIST v1.1

    Time frame: 6 month

  13. Assess progression-free survival (PFS) based on RECIST 1.1

    Efficacy evaluation was performed every 6 weeks (± 7 days), extended to 9 weeks (± 7 days) after 8 cycles for efficacy evaluation, and patients were assessed for tumor by the investigator according to RECIST v1.1

    Time frame: 6 month

  14. Assess overall survival (OS) of subjects

    Survival follow-up assessments will be conducted at 12-week intervals (±7 days) to document Overall survival(OS) and subsequent anticancer therapies, with follow-up terminating at the earliest occurrence of study completion, death, loss to follow-up, or patient withdrawal

    Time frame: 12 month

Other outcomes

  1. Baseline tumor tissue predictive biomarkers

    including but not limited to the correlation between PD-L1 expression, tumor mutational burden (TMB)-related gene mutation status, and the efficacy of TCC1727 combined with benmelstobart in subjects with advanced solid tumors

    Time frame: Screening visit(Day-28 to Day1)

  2. Correlation between mutation status of DDR-related genes in baseline tumor tissues and efficacy of TCC1727 combination therapy

    Mutation status of DDR-related genes in baseline tumor tissue including but not limited to correlation of ATM mutations with efficacy of TCC1727 in combination with Benmelstobart/olaparib/topotecan in subjects with advanced solid tumors

    Time frame: Screening visit(Day-28 to Day1)

  3. Before and after treatment, the distribution changes of blood immune cells . (only applicable to the combination with Benmelstobart)

    The changes in the distribution of blood immune cells at screening period and Cycle1D8, Cycle1D15 and Cycle2D1 . (only applicable to the combination with Benmelstobart)

    Time frame: Screening visit(Day-28 to Day1), Cycle1Day8, Cycle1Day15, Cycle2Day1(Each cycle is 21days)

07

Study locations

1 of 3 sites recruiting
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 28, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07371663
Responsible party
Sponsor
First posted
Jan 28, 2026
Start date
Dec 3, 2025
Primary completion
Sep 30, 2028 (estimated)
Completion
Jun 30, 2029 (estimated)
Last update
Jan 28, 2026

Study contacts

Zhengbo Song
Contact
songzb@zjcc.org.cn
+86 13857153345

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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