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CapTemY90 for Grade 2/3 NET Liver Metastases

  • PhasePhase 2
  • StatusRecruiting
  • Planned enrollment70 people
  • Recruiting US sites1
  • SponsorAbramson Cancer Center at Penn Medicine
  • RegistryNCT04339036

Recruitment re-checked on ClinicalTrials.gov Oct 30, 2026. Public record; not medical advice.

CapTemY90 for Grade 2/3 NET Liver Metastases: a one-minute explainerNCT043390361 min

Eligibility

Who can join

The film gives the main points. The full list below is copied from the registry; the study team makes the final decision.

  • Age18 Years to no maximum
  • SexAll
  • Healthy volunteersNo

You may be able to join if

  • Patients with confirmed diagnosis of histologic grade 2 or 3 well differentiated neuroendocrine tumor with unresectable liver metastases (primary tumor or other extrahepatic disease may be present)
  • Patients with at least one measurable liver metastases, with size > 1cm (RECIST criteria)
  • Patients with liver dominant disease defined as ≥50% tumor body burden confined to the liver
  • Liver tumor burden does not exceed 50% of the liver volume
  • Patent main portal vein
  • At least 4 weeks since last administration of last chemotherapy and /or radiotherapy
  • Age >18 years.
  • Life expectancy of greater than 6 months.
  • ECOG performance status 0-2.
  • Adequate liver function as measured by: Total bilirubin ≤ 2.0mg/dl, ALT, AST ≤5 times ULN, albumin ≥2.5g/dl.
  • Patients must have adequate organ and marrow function as defined below:
  • platelets >100,000/mcL (may be corrected by transfusion)
  • serum creatinine < 2.0 mg/dl
  • INR <1.6, (may be corrected by transfusion)
  • Ability to understand and the willingness to sign a written informed consent document.
  • Women of child bearing potential and fertile men are required to use effective contraception (negative urine or serum βHCG for women of child-bearing age)

You cannot join if

  • Contraindications to capecitibine or temozolomide
  • Contraindicated for both contrast-enhanced MRI and CT
  • Patients previously treated with transarterial embolization (with or without chemotherapy) or with radioembolization (Y-90 microspheres)
  • Contraindication for radioembolization procedures:
  • excessive hepatopulmonary shunt as determined by the investigator
  • inability to deliver Y90 microspheres without risk of non-target embolization of extra-hepatic structures
  • Subjects consenting to the trial who fail their simulation angiography will be removed from the study and replaced.
  • Patients may not be receiving any other investigational agents.
  • Absolute contraindication to intravenous iodinated contrast (Hx of significant previous contrast reaction, not mitigated by appropriate pre-medication).
  • Choledochoenteric anastomosis, transpapillary stent or sphincterotomy of duodenal papilla;
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements.
  • Pregnant and lactating women are ineligible

The treatment

How it is intended to work

This is how the treatment is meant to work. Whether it helps, and how safe it is, is what this trial is testing.

capecitabine. A fluoropyrimidine carbamate belonging to the class of antineoplastic agents called antimetabolites. As a prodrug, capecitabine is selectively activated by tumor cells to its cytotoxic moiety, 5-fluorouracil (5-FU); subsequently, 5-FU is metabolized to two active metabolites, 5-fluoro-2-deoxyuridine monophosphate (FdUMP) and 5-fluorouridine triphosphate (FUTP) by both tumor cells and normal cells. FdUMP inhibits DNA synthesis and cell division by reducing normal thymidine production, while FUTP inhibits RNA and protein synthesis by competing with uridine triphosphate for incorporation into the RNA strand. NCI Drug Dictionary

locally-acting temozolomide formulation SI-053. A powder for gel formulation containing the cytotoxic alkylating agent temozolomide (TMZ), an imidazotetrazine derivative of the alkylating agent dacarbazine, immobilized on the polymeric carrier dextran phosphate, with potential antineoplastic activity. The TMZ formulation SI-053 forms a viscous gel upon reconstitution in water. Upon local intraoperative administration of the gel into the cavity that is formed after resection of the brain tumor, SI-053 allows for local and prolonged action of TMZ. TMZ is converted at physiologic pH to the short-lived active compound 5-(3-methyl-(triazen-1-yl)-imidazole)-4-carboxamide (monomethyltriazenoimidazole carboxamide; MTIC). The cytotoxicity of MTIC is due to methylation of DNA, particularly at the O6 and N7 positions of guanine residues, resulting in cell cycle arrest, inhibition of DNA replication and the induction of apoptosis. The local administration of TMZ allows for the local destruction of the remaining tumor cells immediately after the removal of the tumor and may prevent the recurrence of tumor growth while having no severe systemic toxicity. NCI Drug Dictionary

Y 90 monoclonal antibody CC49. A radioimmunoconjugate of the humanized monoclonal antibody (MoAb) CC49 labeled with Yttrium 90 (Y-90). MoAb CC49 recognizes the pancarcinoma tumor-associated glycoprotein (TAG)-72 with high affinity. Y-90 MoAb CC49 delivers beta particles emitting Y-90 radionuclide directly to tumor cells that express TAG-72, thereby this agent may be used in radioimmunotherapeutic treatment of cancers. NCI Drug Dictionary

Y 90 monoclonal antibody CC49. A radioimmunoconjugate of the humanized monoclonal antibody (MoAb) CC49 labeled with Yttrium 90 (Y-90). MoAb CC49 recognizes the pancarcinoma tumor-associated glycoprotein (TAG)-72 with high affinity. Y-90 MoAb CC49 delivers beta particles emitting Y-90 radionuclide directly to tumor cells that express TAG-72, thereby this agent may be used in radioimmunotherapeutic treatment of cancers. NCI Drug Dictionary

Treatments listed in the registry

  • Capecitabine Oral Product (Drug): Capecitabine 750 mg/m2 twice daily orally for 14 days
  • Temozolomide Oral Product (Drug): temozolomide 200 mg/m2 orally on Days 10-14, with 14 days between cycles
  • transarterial radioembolization (Combination Product): Trans-arterial radioembolization (TARE) on Day 7 of cycle 2 and, if needed for the other lobe, Day 7 of either cycle 3 or 4.

The study

Treatment groups

Na · Single Group · masking: None

Oral CapTem + Y90 Radioembolization (Experimental)

Capecitabine 750 mg/m2 twice daily orally for 14 days and temozolomide 200 mg/m2 orally on Days 10-14, with 14 days between cycles, to be continued until 1) disease progression or 2) intolerable toxicities. Trans-arterial radioembolization (TARE) on Day 7 of cycle 2 and, if needed for the other lobe, Day 7 of either cycle 3 or 4.

Goals

What the study measures

Main goals

  • Intra-hepatic progression-free survival (2 years. Time from initiation of study therapy until first documented intra-hepatic disease progression, death due to any cause or last scan date that documented intra-hepatic progression-free status.)

Other goals

  • Overall Progression free survival
  • Intra-hepatic tumor responses by RECIST
  • Intra-hepatic tumor responses by EASL
  • extra-hepatic tumor responses
  • Number of participants with systemic toxicities
  • Number of participants with hepatic toxicities
  • Change in CgA over time
  • Quality of Life by European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire for Neuroendocrine tumor

Planned enrollment: 70 (estimated).

Where

Recruiting US sites

  • University of Pennsylvania, Philadelphia, Pennsylvania

Site status as of Oct 30, 2026. Check the live record before contacting a site.

Background research

Papers linked by the registry

These papers are listed in the registry record. Unless a paper is marked as about this trial, it is background research on the treatment or disease, not results from this study.

Sources

Where this comes from

Registry record reviewed as fetched Oct 30, 2026, last updated by the sponsor Oct 7, 2026. Public record; not medical advice.

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