Treatment
S-1 clinical trials
We’re tracking 792 recruiting studies that include S-1, each written for real people, not researchers, below.
Recruiting studies
- NCT04997837RecruitingPhase 3
Adjuvant chemo with or without PD-1 for stomach cancer after surgery
This Phase 3 trial studies whether adding an immune medicine called PD-1 (given as an “inhibitor”) to standard chemotherapy and chemoradiation after stomach/GEJ cancer surgery can lower the risk of cancer coming back. You may qualify if you’ve had surgery removing the tumor and lymph nodes showed higher-risk disease.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT05342792RecruitingPhase 3
Chemo tablets with or without an immune therapy after cancer treatment
This trial tests whether taking the chemo tablet capecitabine after standard chemoradiation can help prevent cancer from coming back, and whether adding an immune therapy (a PD-1 antibody) improves results. It is for people with high-risk nasopharyngeal (throat) cancer whose main treatment has already finished.
Guangzhou, GuangdongAges 18–65 - NCT05392413Recruiting
Predicting who benefits from PD-1 antibody for esophageal cancer
This study uses an “immune indicator model” to help predict how well a PD-1 antibody (a cancer-fighting immune drug) works when combined with chemotherapy for stage IV esophageal squamous cell cancer. If you qualify, you receive the treatment and the researchers also look for immune-related signs that may explain who benefits most.
GuangzhouAges 18–75 - NCT04047953Recruiting
Chemo for stomach cancer to make tumors easier to remove
This trial tests a combination chemotherapy plan—paclitaxel (albumin-bound), oxaliplatin, and S-1 given before surgery—to try to shrink stomach cancer and improve the chance of successful tumor removal. It is for people whose cancer is locally advanced or has spread, but might still be resectable (removable) in certain cases.
Beijing, Beijing MunicipalityAges 18–75 - NCT05980715RecruitingPhase 3
Comparing immunotherapy to radiation after successful treatment for head and neck cancer
This trial looks at whether giving an immunotherapy drug (a PD-1 inhibitor) after surgery is better than giving radiation therapy for people with advanced head and neck cancer who had a complete response to chemotherapy and immunotherapy before surgery. The goal is to prevent the cancer from coming back.
Guangzhou, GuangdongAges 18–65 - NCT06130332RecruitingPhase 2
Immunotherapy Plus Chemo Before Surgery for Early Oral Cancer
This trial tests a new immunotherapy drug (tirellizumab) combined with chemotherapy before surgery for early-stage oral cancer. It aims to see if this combination can help shrink the tumor and improve outcomes.
Guangzhou, GuangdongAges 18–75 - NCT05245474RecruitingPhase 2
Before-surgery chemoradiation plus PD-1 for locally advanced rectal cancer
This trial studies giving long-course radiation and chemotherapy before surgery, plus an immunotherapy medicine (PD-1) to help the tumor shrink more. It’s for people with stage II or III rectal cancer that has not spread to distant organs.
Beijing, Beijing MunicipalityAges 18–75 - NCT07865793RecruitingPhase 2
Lattice radiation with immunotherapy for advanced tumors
This trial tests a new way to give radiation called lattice therapy together with immunotherapy drugs that help your immune system fight cancer. It is for people with advanced solid tumors that have grown or spread, with at least one large tumor that can be measured.
Shenzhen, GuangdongAges 18–70 - NCT06190067RecruitingPhase 2
Azacitidine plus PD-1 for relapsed Hodgkin lymphoma
This trial tests a combination of two medicines—azacitidine and a PD-1 inhibitor—for people with Hodgkin lymphoma that has returned or not responded to previous treatment. The aim is to see if this combination can help control the disease.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07858864Recruiting
GLP-1 weight loss drugs and muscle health in obesity
This study looks at how GLP-1 receptor agonist drugs (used for weight loss) affect muscle mass and strength in people with obesity who do not have diabetes. It may help understand if these medications impact muscle health.
Istanbul, KucukcekmeceAges 18 years+ - NCT06190782RecruitingPhase 3
Local therapy for limited metastatic esophageal cancer
This trial tests whether adding targeted radiation or other local treatments can help people with esophageal cancer that has spread to only a few spots (up to 4) after they've been treated with a PD-1 inhibitor. It aims to control the cancer better and improve outcomes.
ShanghaiAges 18 years+ - NCT06311929RecruitingPhase 4
Personalized treatment after liver cancer surgery
This trial tests a tailored treatment plan after surgery for liver cancer that shows a specific blood vessel pattern (VETC). The goal is to find the best follow-up therapy to lower the chance of cancer coming back.
Wuhan, HubeiAges 18–75 - NCT06311942RecruitingPhase 4
Comparing triple vs. dual therapy after liver surgery for liver cancer
This trial tests whether adding a third drug to standard two-drug therapy after liver surgery helps prevent liver cancer from returning. It is for people who have a specific blood vessel pattern in their tumor, called VETC, seen on a special stain.
Wuhan, HubeiAges 18–75 - NCT05646550RecruitingPhase 1
Antibody CC-1 for men with returning prostate cancer
This Phase 1 study tests an antibody drug (CC-1) for men whose prostate cancer has come back, based on rising PSA blood tests. It looks at safety and how the treatment affects cancer activity, especially whether it can help control early biochemical recurrence.
TübingenAges 18 years+ - NCT06430502Recruiting
Cancer vaccine plus immunotherapy for advanced solid tumors
This trial tests a cancer vaccine (called TTV) combined with a PD-1 inhibitor (a type of immunotherapy) for people with advanced solid tumors that have not responded to standard treatments. The goal is to see if this new combination helps shrink tumors or slow cancer growth.
Wuxi, JiangsuAges 18–85 - NCT06455124RecruitingPhase 2
Short radiation and chemo-immunotherapy for early rectal cancer after local surgery
This trial tests a combination of short-course radiation, chemotherapy (CapeOx), and an immunotherapy drug (PD-1 inhibitor) for people with early-stage rectal cancer who have had a local excision but are at high risk of the cancer coming back. The goal is to avoid more extensive surgery while still effectively treating the cancer.
ShanghaiAges 18–75 - NCT06084897RecruitingPhase 2
Radiotherapy for metastatic esophageal cancer responding to immunotherapy
This trial tests whether adding radiotherapy can help people with metastatic esophageal cancer that has already responded well to initial treatment with immunotherapy and chemotherapy. It may offer a way to improve outcomes for those whose cancer has not progressed after 2-4 cycles of first-line treatment.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06462053RecruitingPhase 2
Short radiotherapy plus chemo and immunotherapy for early low rectal cancer
This study is testing whether a short course of radiation combined with chemotherapy and an immunotherapy drug works better than the standard longer radiation and chemotherapy for early-stage rectal cancer that is low in the rectum. The goal is to see if this shorter treatment can help patients avoid surgery or have a better outcome.
ShanghaiAges 18–75 - NCT06359275RecruitingPhase 2
Combination therapy for locally advanced or recurrent pancreatic cancer
This trial tests a combination of immunotherapy (PD-1), chemotherapy, and a special type of radiation called PULSAR for patients with locally advanced pancreatic cancer or cancer that has come back only in the pancreas area. The goal is to see if this approach can shrink tumors or keep them from growing.
ShanhaiAges 18–75 - NCT06487429RecruitingPhase 2
Short radiation followed by combo therapy for HER2+ stomach cancer
This trial tests a new approach for stomach cancer that has spread to nearby tissues but not to other organs. You would get a short course of radiation, followed by a combination of targeted therapy (Disitamab Vedotin), chemotherapy (S-1), and immunotherapy (Sintilimab) before surgery to shrink the tumor and improve outcomes.
Wuhan, HubeiAges 18–75 - NCT06086457RecruitingPhase 3
Immunotherapy plus chemo with or without radiation for esophageal cancer
This trial tests whether adding radiation therapy to a standard treatment (immunotherapy plus chemotherapy) can help people with advanced esophageal cancer that has spread to up to two organs. The goal is to see if the combination improves outcomes.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07786766RecruitingPhase 2
Pemigatinib plus immunotherapy for FGFR2-positive bile duct cancer
This study tests a combination of two drugs—pemigatinib (a targeted therapy) and a PD-1 inhibitor (an immunotherapy)—with or without chemotherapy, for people with advanced bile duct cancer that has an FGFR2 fusion or rearrangement. The goal is to see if this combination is more effective than standard treatment, and to find better ways to treat this type of cancer.
BeijingAges 18–80 - NCT06536959RecruitingPhase 2
VA plus PD-1 inhibitor for relapsed AML and high-risk MDS
This trial tests a combination of two drugs—a chemotherapy-like agent called VA and a PD-1 inhibitor (which helps your immune system fight cancer)—for people with AML or high-risk MDS that has not responded to or returned after initial treatment. The goal is to see if this combination can work better than standard treatments alone.
Beijing, Beijing MunicipalityAges 18–70 - NCT07781358RecruitingPhase 2
Testing a new drug combination for recurrent nasopharyngeal cancer
This trial tests a new drug combination for people whose nasopharyngeal cancer has come back in the same area or nearby lymph nodes. The goal is to see if this treatment can shrink or control the cancer.
Shanghai, Shanghai MunicipalityAges 18–80
Common questions
- Are there clinical trials studying S-1?
- Yes. Clin2 currently lists 792 recruiting studies that include S-1, drawn from the U.S. registry and rewritten for real people so you can see what each is testing and who it's for.
- How do I know if I qualify for a S-1 trial?
- Each study lists its own eligibility criteria — rules about condition, age, and prior treatments. On every Clin2 trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Is S-1 an approved treatment?
- A drug being studied in a trial may be investigational (still being tested) or already approved and being studied for a new use. Each study page explains what phase it's in. Clin2 does not provide medical advice — talk with your doctor about whether S-1 or a specific trial is right for you.
Related treatments
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. A drug appearing here is being studied in a trial and may be investigational. Talk with your doctor about whether a specific treatment or trial is right for you.