ClinicalTrials.gg
TerminatedNCT05026736Updated Jul 21, 2026Results posted

Sintilimab for the Treatment of Locally Advanced, Metastatic, or Recurrent Angiosarcoma, the SiARa Cancer Study

A Phase 2 interventional study of Quality-of-Life Assessment and Sintilimab in Locally Advanced Angiosarcoma, Metastatic Angiosarcoma and Recurrent Angiosarcoma, sponsored by M.D. Anderson Cancer Center. Terminated at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-21.

Sponsored by M.D. Anderson Cancer Center · Phase 2, Interventional, and Treatment

Why this study was terminated
PI request, \<75% participation
Phase
Phase 2
Study type
Interventional
Enrollment
6
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This phase II trial evaluates the effect of sintilimab in treating patients with angiosarcoma that has spread to nearby tissue or lymph nodes (locally advanced), has spread to other places in the body (metastatic), or has come back (recurrent). Immunotherapy with monoclonal antibodies, such as sintilimab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving sintilimab may help to control angiosarcoma.

Read the detailed description

PRIMARY OBJECTIVE:

I. To evaluate the efficacy of sintilimab in subjects with angiosarcoma (progression- free rate PFR at 9 cycles by Response Evaluation Criteria in Solid Tumors [RECIST] 1.1).

SECONDARY OBJECTIVE:

I. To evaluate the objective response rate (ORR), stable disease rate (SDR), progression free survival (PFS), overall survival (OS), quality of life (QOL), safety and duration of response (DOR) of sintilimab in subjects with angiosarcoma.

EXPLORATORY OBJECTIVES:

I. To evaluate the correlation between biomarkers in tumor tissue and efficacy, including but not restricted to PD-L1 expression level, transcriptome sequencing, single-cell sequencing, and multicolor immunohistochemistry (IHC) analyses.

II. To evaluate the correlation between biomarkers in peripheral blood and efficacy, including but not restricted to soluble PD-L1, circulating tumor deoxyribonucleic acid (DNA) (ctDNA), and cytokine analyses.

OUTLINE:

Patients receive sintilimab intravenously (IV) over 30-60 minutes on day 1. Cycles repeat every 21 days for up to 24 months in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue to receive treatment at the discretion of the treating physician.

After completion of study treatment, patients are followed up at 30 and 90 days, and then every 60 days for up to 3 years.

02

Conditions studied

  • Locally Advanced Angiosarcoma
  • Metastatic Angiosarcoma
  • Recurrent Angiosarcoma

Browse trials for

03

In context

Hemangiosarcoma

99 studies on the registry are indexed under Hemangiosarcoma; 16 are open to participants now.

This study's enrollment of 6 is below the median of 64 across 83 interventional studies indexed under Hemangiosarcoma.

Browse Hemangiosarcoma studies →

Lead sponsor

M.D. Anderson Cancer Center is the lead sponsor of 3,047 studies on the registry; 578 are open to participants now.

Of its 612 completed or terminated interventional studies of FDA-regulated products, 409 (67%) have results posted.

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

  • Histopathologically confirmed unresectable, locally advanced, recurrent or angiosarcoma
  • Intolerant to or progressed on at least one . Patient ineligible for cytotoxic chemotherapy are eligible
  • Aged >= 18
  • Can provide archival or fresh tissues for optional correlative analysis
  • Have at least one as per version (v)1.1
  • (ECOG) performance status =\< 1
  • (ANC) >= 1.0 x 10\^9/L
  • (PLT) count >= 75 x 10\^9/L
  • (HGB) >= 8.0 g/dL
  • Total (TBIL) =\< 1.5 x (ULN)
  • (ALT) and aspartate aminotransferase (AST) =\< 2.5 x ULN in subjects without hepatic metastasis; ALT and AST =\< 5 x ULN in subjects with hepatic metastasis, gamma-glutamyl transferase (GGT) =\< 10 x ULN
  • Urine protein \< 2+ from random sample or \< 1 g from 24-hour urine collection
  • Serum creatinine =\< 1.5 x ULN or calculated rate (Ccr) >= 50 mL/min by Cockcroft-Gault formula
  • Adequate coagulation function, defined as (INR) =\< 1.5 or prothrombin time (PT) =\< 1.5 x ULN; if the subject is receiving anticoagulant therapy, the results of coagulation tests need to be within the acceptable range for anticoagulants
  • Expected survival >= 12 weeks
  • Subject (female subjects of childbearing age or male subjects whose partners are of childbearing age) must take effective measures during the entire course of the trial and until 180 days after the last dose
  • Signed the form (ICF) and be able to comply with the scheduled follow-up visits and related procedures required in the protocol

Exclusion criteria

Exclusion Criteria:

  • Received treatment with an , anti-PD-L1, anti-PD-L2, anti-CD137, or anti-CTLA-4 antibody, or any other antibody or drug that specifically targets T-cell co-stimulation or immune checkpoint pathways
  • Enrolled in another interventional clinical study for angiosarcoma, unless only involved in an observational study (non-interventional) or in the follow-up phase of an interventional study
  • Received palliative radiation therapy for local lesion within 2 weeks prior to the first dose
  • Received systemic treatment with anti-cancer indications or immunomodulators (including thymosins, interferons, and interleukins) within 2 weeks prior to the first dose of study treatment
  • Received systemic within 2 weeks prior to first dose, excluding local use of administered by nasal, inhaled, or other routes, and systemic glucocorticoids at physiological doses (no more than 10 mg/day of prednisone or equivalents), or glucocorticoids to prevent allergies to contrast media
  • Received a within 4 weeks prior to the first dose of study treatment or be scheduled to receive live attenuated vaccine during the study period

    • Note: Seasonal inactivated influenza virus vaccines within 4 weeks prior to the first dose of study treatment are permitted, but attenuated influenza vaccines are not
  • Received major surgery (craniotomy, thoracotomy, or laparotomy) within 4 weeks prior to the first dose of study treatment or is scheduled to receive major surgery during the course of the trial
  • Any toxicity (excluding alopecia, events that are not , or asymptomatic laboratory abnormalities) due to prior anti-tumor therapy that has not yet resolved to National Cancer Institute (NCI CTCAE) v5.0 grade 0 or 1 prior to the first dose of study treatment
  • Known symptomatic central nervous system (CNS) or carcinomatous meningitis. Subjects with who have received prior treatment can be enrolled if the disease is stable (no imaging evidence of progressive disease [PD] for at least 4 weeks prior to the first dose of study treatment), there is no evidence of new brain metastases or progression of the existing metastatic lesion(s) upon repeated imaging, and corticosteroids have not been required for at least 14 days prior to the first dose of study treatment. Patients with carcinomatous meningitis are ineligible, regardless of whether the disease is clinically stable or not
  • Subjects with bone metastases at risk of paraplegia
  • Known active disease requiring treatment or previous disease history within 2 years (subjects with vitiligo, psoriasis, alopecia, or Graves' disease not requiring systemic treatment, hypothyroidism only requiring thyroid replacement, or type I diabetes only requiring insulin can be enrolled)
  • Known history of primary immunodeficiency diseases
  • Known active pulmonary tuberculosis
  • Known history of allogeneic organ transplantation or hematopoietic stem cell transplantation
  • (HIV)-infected subjects (positive anti-HIV antibody)
  • Active or poorly controlled serious infections that require systemic therapy
  • Symptomatic congestive heart failure ( [NYHA] class II-IV) or symptomatic or poorly controlled arrhythmia
  • Uncontrolled hypertension (systolic blood pressure >= 160 mmHg or diastolic blood pressure >= 100 mmHg) despite of standard treatment
  • Any arterial thromboembolic event within 6 months prior to enrollment, including myocardial infarction, unstable angina, cerebrovascular accident, or transient cerebral ischemic attack
  • Significant malnutrition, such as those requiring continuous parenteral nutrition >= 7 days; excluding those having received intravenous treatment for malnutrition for more than 4 weeks before the first dose of study treatment
  • History of clinically significant deep venous thrombosis, pulmonary embolism, or other serious thromboembolic events within 3 months prior to enrollment (implantable port or catheter-related thrombosis or incidental pulmonary embolism [PE] detected on scan without symptoms or superficial venous thrombosis are not considered as "serious" thromboembolisms)
  • Uncontrolled metabolic disorders, non-malignant organ or systemic diseases, or cancer-related secondary diseases that may lead to higher medical risks and/or survival evaluation uncertainties
  • Hepatic encephalopathy, hepatorenal syndrome, or cirrhosis with class B or C
  • Bowel obstruction or history of the following diseases: inflammatory bowel disease, extensive bowel resection (partial colectomy or extensive small intestine resection accompanied with chronic diarrhea), Crohn's disease, or ulcerative colitis
  • Known acute or chronic active (positive hepatitis B surface antigen [HBsAg] and hepatitis B virus [HBV] deoxyribonucleic acid [DNA] viral load >= 10\^4 copies/mL or > 2000 IU/mL), or acute or chronic active (hepatitis C virus [HCV] ribonucleic acid [RNA] >10\^3 copies/mL), or simultaneously positive for HBsAg and HCV antibody
  • History of gastrointestinal (GI) perforation and/or fistula within 6 months prior to the enrollment, excluding gastrostomy or enterostomy
  • Interstitial lung disease requiring corticosteroids
  • History of other primary malignant tumors, excluding:

    • Malignant tumors that achieved a complete response (CR) at least 2 years prior to enrollment and expected to require no treatment during the trial
    • Adequately treated nonmelanoma skin cancer or lentigo maligna with no sign of disease recurrence
    • Adequately treated carcinoma in situ with no sign of disease recurrence
    • Prostate, chronic lymphocytic leukemia (CLL) or other cancers where the indolent nature of tumor allows for and patient is cancer under active surveillance
  • Pregnant or breastfeeding female subjects
  • Acute or chronic diseases, psychiatric disorders, or laboratory abnormalities that may lead to the following consequences: increased drug-related risks, interference with interpretation of trial results, or considered ineligible for participating in the trial by the investigators

    • If there are any uncertainties regarding the inclusion/exclusion, please contact the sponsor immediately and provide a complete medical history of the subject. The sponsor and principal investigator will discuss and determine the eligibility of the subject
Terms in these criteria, in plain language(30)

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.

Metastases

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

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.

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.

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.

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.

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.

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.

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.

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.

Live vaccines

Vaccines made with a weakened form of the germ, such as measles–mumps–rubella (MMR), chickenpox and yellow fever. They can be risky when the immune system is weakened. Flu injections are not live; the nasal flu spray is.

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.

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.

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.

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.

Allogeneic and autologous transplant

Stem cell (bone marrow) transplants. Allogeneic uses cells from a donor; autologous uses your own cells, collected earlier and given back.

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.

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.

Child-Pugh class

A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.

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.

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.

05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
6 participants (actual)

Study arms

  • Experimental
    Treatment (sintilimab)

    Patients receive sintilimab IV over 30-60 minutes on day 1. Cycles repeat every 21 days for up to 24 months in the absence of disease progression or unacceptable toxicity. Patients with progressive disease may continue to receive treatment at the discretion of the treating physician.

    Other: Quality-of-Life Assessment · Biological: Sintilimab

Interventions

  • OtherQuality-of-Life Assessment

    Ancillary studies

    Also known as: Quality of Life Assessment

  • BiologicalSintilimab

    Given IV

    Also known as: Anti-PD-1 Monoclonal Antibody IBI308, Anti-PDCD1 Monoclonal Antibody IBI308, IBI 308, IBI308

06

What researchers measure

Primary outcomes

  1. Progression-free Rate at 9 Cycles

    A patient was considered as a responder to the treatment if he/she had no confirmed progressive disease determined by RECIST 1.1 after 9 cycles of therapy. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) as a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addtion, the sum must also demonstrate an absolute increaase of at least 5 mm. (Note: the appearmance of one or more new lesions is also considered progression).

    Time frame: Nine cycles of therapy (Each cycle consists of a 21-day period)

Secondary outcomes

  1. Objective Response Rate (Complete Response + Partial Response)

    Objective response rate is defined as percentage of participants who have achieved a complete response or particial response per Response Evaluation Criteria In Solid Tumors Criteria (RECISTv1.1). Complete response is defined as disapperance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. Partial response is defined as at least 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters.

    Time frame: up to 3 years

  2. Duration of Response

    Duration of response (DOR) was measured from the time measurement criteria were first met for complete response (CR) or partial response (PR) (whichever is first recorded) until the first date that recurrent or progressive disease (PD) is objectively documented (taking as reference for PD the smallest measurements recorded on study). Using RECIST v1.1, CR is defined as disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. PR is defined as at least 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters. PD is defined as a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition, the sum must also demonstrate an absolute increase of at least 5 mm. (Note: the appearmance of one or more new lesions is also considered progression).

    Time frame: Up to 3 years

  3. Progression Free Survival

    Progression-free survival is defined as the time from treatment onset to either disease progression or death from any cause, or discontinuation of treatment for any reason, whichever occurs first

    Time frame: Up to 3 years

  4. Overall Survival

    Overall survival is defined as the time from treatment onset to death

    Time frame: Up to 3 years

  5. Stable Disease for 9 Cycles

    Stable disease for 9 cycles is defined as proportion of patients whose stable disease last for at least 9 cycles.

    Time frame: Nine cycles of therapy (Each cycle consists of a 21-day period)

  6. Adverse Events

    Adverse events were evaluated according to NCI CTCAT v5.0

    Time frame: Up to 90 days after the last dose, approximately 34 months

07

Results

Posted Jul 21, 2026

Participant flow

Participant flow — Overall Study
MilestoneTreatment (Sintilimab)
Started6
Completed0
Not completed6
Withdrew: Adverse event1
Withdrew: Withdrawal by subject1
Withdrew: Progression of disease2
Withdrew: Drug supply exhausted2

Outcome measures

PrimaryProgression-free Rate at 9 Cycles

A patient was considered as a responder to the treatment if he/she had no confirmed progressive disease determined by RECIST 1.1 after 9 cycles of therapy. Progression is defined using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.1) as a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addtion, the sum must also demonstrate an absolute increaase of at least 5 mm. (Note: the appearmance of one or more new lesions is also considered progression).

Time frame:
Nine cycles of therapy (Each cycle consists of a 21-day period)
Reported as:
Number · Percentage of participants
Progression-free Rate at 9 Cycles
Percentage of participantsTreatment (Sintilimab)
Progression-free Rate at 9 Cycles67 (20 to 90)
SecondaryObjective Response Rate (Complete Response + Partial Response)

Objective response rate is defined as percentage of participants who have achieved a complete response or particial response per Response Evaluation Criteria In Solid Tumors Criteria (RECISTv1.1). Complete response is defined as disapperance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. Partial response is defined as at least 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters.

Time frame:
up to 3 years
Reported as:
Number · Percentage of participants
Objective Response Rate (Complete Response + Partial Response)
Percentage of participantsTreatment (Sintilimab)
Objective Response Rate (Complete Response + Partial Response)50 (12 to 88)
SecondaryDuration of Response

Duration of response (DOR) was measured from the time measurement criteria were first met for complete response (CR) or partial response (PR) (whichever is first recorded) until the first date that recurrent or progressive disease (PD) is objectively documented (taking as reference for PD the smallest measurements recorded on study). Using RECIST v1.1, CR is defined as disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. PR is defined as at least 30% decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters. PD is defined as a 20% increase in the sum of diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition, the sum must also demonstrate an absolute increase of at least 5 mm. (Note: the appearmance of one or more new lesions is also considered progression).

Time frame:
Up to 3 years
Reported as:
Median · months
Duration of Response
monthsTreatment (Sintilimab)
Duration of Response22.3 (19.7 to 24.8)
SecondaryProgression Free Survival

Progression-free survival is defined as the time from treatment onset to either disease progression or death from any cause, or discontinuation of treatment for any reason, whichever occurs first

Time frame:
Up to 3 years
Reported as:
Median · months
Progression Free Survival
monthsTreatment (Sintilimab)
Progression Free SurvivalNA (1.25 to NA)
SecondaryOverall Survival

Overall survival is defined as the time from treatment onset to death

Time frame:
Up to 3 years
Reported as:
Median · months
Overall Survival
monthsTreatment (Sintilimab)
Overall SurvivalNA (6.83 to NA)
SecondaryStable Disease for 9 Cycles

Stable disease for 9 cycles is defined as proportion of patients whose stable disease last for at least 9 cycles.

Time frame:
Nine cycles of therapy (Each cycle consists of a 21-day period)
Reported as:
Number · Percentage of participants
Stable Disease for 9 Cycles
Percentage of participantsTreatment (Sintilimab)
Stable Disease for 9 Cycles16.7 (0.4 to 64.1)
SecondaryAdverse Events

Adverse events were evaluated according to NCI CTCAT v5.0

Time frame:
Up to 90 days after the last dose, approximately 34 months
Reported as:
Count of participants · Participants
Adverse Events
ParticipantsTreatment (Sintilimab)
Overall Treatment-emergent adverse events6
Treatment-related adverse events5

Adverse events

Collected over Up to 3 years. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Treatment (Sintilimab)2/6 (33.3%)3/6 (50%)6/6 (100%)
Most frequent serious events
Most frequent serious events
EventTreatment (Sintilimab)
Spinal Fracture, Grad 3,Musculoskeletal and connective tissue disorders1/6
Device related infection, Grad 3Blood and lymphatic system disorders1/6
Dyspnea, Grad 3,Respiratory, thoracic and mediastinal disorders1/6
Most frequent other events
Showing 10 of 75
Most frequent other events
EventTreatment (Sintilimab)
FatigueGeneral disorders5/6
Fatigue Grade 2General disorders4/6
AnemiaBlood and lymphatic system disorders3/6
ArthralgiaMusculoskeletal and connective tissue disorders3/6
Creatinine IncreasedInvestigations3/6
NauseaGastrointestinal disorders3/6
Alanine Aminotransferase IncreasedInvestigations2/6
ConstipationGastrointestinal disorders2/6
CoughRespiratory, thoracic and mediastinal disorders2/6
DiarrheaGastrointestinal disorders2/6

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Treatment (Sintilimab)
<=18 years0
Between 18 and 65 years4
>=65 years2
Sex: Female, Male
Sex: Female, Male(Participants)Treatment (Sintilimab)
Female1
Male5
Ethnicity (NIH/OMB)
Ethnicity (NIH/OMB)(Participants)Treatment (Sintilimab)
Hispanic or Latino1
Not Hispanic or Latino5
Unknown or Not Reported0
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Treatment (Sintilimab)
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American1
White5
More than one race0
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Treatment (Sintilimab)
United States6
08

Study locations

1 site
  • M D Anderson Cancer Center
    Houston, Texas 77030, United States
09

References and documents

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jul 21, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT05026736
Responsible party
Sponsor
First posted
Aug 30, 2021
Start date
Aug 23, 2021
Primary completion
Aug 12, 2025
Completion
Aug 12, 2025
Results posted
Jul 21, 2026
Last update
Jul 21, 2026

Study contacts

Vinod Ravi
principal investigator · M.D. Anderson Cancer Center

Oversight

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

Not currently enrolling

This study is terminated, as verified in Jun 2026. You cannot join it, but the record below documents what was studied.

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Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

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Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Studies of the drug tested here: Sintilimab

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