ClinicalTrials.gg
RecruitingNCT05999396CoRe_CC-3Updated May 21, 2025

FIH, Bispecific CD276xCD3 Antibody CC-3 in Patients With Colorectal Cancer

A Phase 1 interventional study of Administration of CC-3 in Colorectal Cancer, Breast Carcinoma and Sarcoma, sponsored by German Cancer Research Center. Recruiting at 1 site in Germany. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-05-21.

Sponsored by German Cancer Research Center · Phase 1, Interventional, and Treatment

From the registry’s dates

  • Started Jan 2024; still recruiting 2 years 9 months later.
Phase
Phase 1
Study type
Interventional
Enrollment
89
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

This trial is a first in human (FIH) clinical trial in patients with Colorectal cancer (CRC) after failure of at least three lines of previous therapy aiming to evaluate safety and efficacy of CC-3, a bispecific antibody (bsAb) with CD276xCD3 specificity developed within DKTK. CC-3 binds to CD276 on cancer cells as well as to tumor vessels of CRC, thereby allowing for a dual mode of anti-cancer action. CC-3 was developed in a novel format which not only prolongs serum half-life, but most importantly reduces off-target T cell activation with expected fewer side effects. A similar construct in this format with PSMAxCD3 specificity is presently undergoing clinical evaluation in patients with prostate cancer (NCT04104607), with very favorable safety and preliminary efficacy. The optimized format that CC-3 shares with its PSMAxCD3 "sister molecule" allows for application of effective bsAb doses with expected high anticancer activity. The clinical trial comprises two phases: The first phase is a dose-escalation part to evaluate the maximally tolerated dose (MTD) of CC-3. This is followed by a dose-expansion part to defined the recommended phase II dose. A translational research program comprising, among others, analysis of CC-3 half-life and the induced immune response will serve to better define the mode of action of CC-3.

Read the detailed description

Metastasized CRC is an aggressive malignant disease with poor prognosis after failure of at least three lines of previous therapy, with an accordingly high medical need for new therapeutic approaches. Except for the small population with microsatellite instability, so far no relevant progress has been achieved in CRC by immunotherapeutics. CC-3 is designed to direct T cells towards CRC tumor cells and additionally reacts with tumor vessels. If successful, the trial establishes a novel type of dual anti-cancer action by also attacking tumor blood supply and allowing for improved influx of immune effector cells and thus holds promise as a new concept of immunotherapy for cancer patients.

The rationale for the therapeutic use of CC-3 is based on its proposed mode of action as a bsAb being specifically designed to direct T cells via its CD3 binding part towards tumor target cells via its CD276 binding part. Furthermore, CC-3 also reacts with tumor vessels of CRC thereby allowing for a dual mode of anti-cancer action by also attacking tumor blood supply and allowing for improved influx of immune effector cells. Due to its unique ability to redirect T cells via CD3 for CD276 expressing tumor cell lysis, CC-3 can elicit repeated target cell elimination by cytotoxic T cells and a polyclonal response of previously primed CD4+ and CD8+ T cells. Compared to other immunotherapeutics presently being approved or in development (bsAbs with alternative formats like the authorised bsAb blinatumomab or other antibodies or CAR T cells), CC-3 is expected to offer the following major advantages:

(i) reduction of side effects due to its optimal bsAb format and choice of TAA, which will allow for application of truly effective bsAb doses and accordingly increased efficacy; (ii) CD276 enables dual targeting, thereby improving accessibility of CRC tumors to immune effector cells, as prerequisite for therapeutic success (iii) CC-3 is an "off the shelf drug" eliminating the preparative work required for CART cell generation that delays treatment; (iv) the introduction of the YTE modification will allow for prolonged half-life an thus convenient dosing scheme

Clinical trial rationale with regard to objectives and further development of CC-3

In nonclinical studies, in vitro and in vivo, proof of concept, preliminary pharmakokinetic (PK) and pharmakodynamic (PD) effects as well as toxicology have been evaluated as described in detail in the IB . However, due to differences between animal models and the human situation, some aspects have to be assessed and further characterised in humans. For example, the target mediated drug disposition (TMDD), an effect that largely influences the serum half-life of antibody molecules particularly at low concentrations, cannot be properly addressed in mice. Similar problems arise with the YTE modification, which prolongs serum half-life of antibodies in humans but not in mice.Furthermore, non-human primates (NHP) and rodents have several limitations as predictive models for toxicity and immunogenicity evaluation of CC-3. The CD3 binding part of CC-3 does not cross-react with CD3 of macaques and thus it is not possible to evaluate in these NHPs dose limiting side effects. Therefore, a First in Human clinical trial is planned for CC-3 to characterise the effects of CC-3 in humans. In general CD276 is a target antigen with particularly attractive properties. It is expressed not only on tumor cells but also on tumor vessels, allowing for "dual targeting" of a variety of solid tumors including (but not limited to) GI cancer. The importance of vascular targeting for treatment of solid tumors has been elegantly demonstrated in numerous reports.

As described in detail in the IB, CD276 is expressed on all analysed samples (n=59) of colorectal tumor samples of patients with metastazised disease. Of note, CD276 is expressed on the primary tumor as well as on metastasis. Therefore, the analysis of CD276 expression on the tumor comprises an exploratory objective of this trial but is not needed for inclusion of patients.

The phase I trial is designed to confirm and further explore the safety and tolerability of the CD276xCD3 bsAb CC-3 in adult patients with CRC after failure of at least three lines of previous therapy. The primary objectives are to define the MTD and RP2D of CC-3 and the overall safety defined as incidence and severity of AEs under therapy with CC-3. Furthermore, the trial aims to expand experience on pharmacokinetics, pharmacodynamics and toxicology of CC-3 from nonclinical- studies. A focus will be on the following specific aspects/parameters:

  • PK and PD of CC-3 in humans
  • Assessment of objective response rate by RECIST 1.1 on routine imaging
  • Evaluatation of disease control rate (CR, PR, SD)
  • Overall (OS) and progression free survival (PFS)
  • Immunogenicity of CC-3 in humans based on both absolute (number and percentage of subjects who develop human anti-human antibody (HAHA).
  • Overall quality of life scores (EORTC QLQ C-30)
  • Absolute changes from baseline in the tumor marker (CEA und CA 19-9)
  • Absolute changes from baseline in laboratory parameters
  • Change in T cell activation and cytokines from baseline
  • To correlate safety and efficacy of CC-3 treatment with with clinical, biological and patient characteristics
  • To correlate the effect of CC-3 on serum cytokine levels and pharmarkodynamic biomarkers in the peripheral blood
  • To assess long-term safety and product specific safety

Dose rationale for CC-3

Considerations on a safe starting dose of 20µg for CC-3 are, besides preclinical in vitro and in vivo data of CC-3, based on the meanwhile available PK data from a clinical study with CC-1, an identically formatted bsAb with PSMAxCD3 - (rather than CD276xCD3)-specificity, but also on clinical experience with MGD009, a bsAb with CD276xCD3-specificity as well as recently published data from several clinical studies with CD20xCD3 bsAb. The target dose of 4mg CC-3 is based on observations from the in vivo model with humanized NSG mice, where repetitive dosing with 1.4µg CC-3 was able to eradicate established flank tumors. This dose corresponds to approximately 4mg once per week in humans. Further details can be found in the IB of CC-3.

Safety and expected risks of the IMP

For CC-3, so far, no clinical safety data from other clinical trials are available. CC-3 has been preclinically characterized extensively in vitro and in vivo, the toxicity of the treatment class of bsAbs, with CRS as main class toxicity, is well known and safety data for CC-1, an identically formatted bsAb with PSMAxCD3 (rather than CD276xCD3)-specificity, which was extensively investigated in the ongoing clinical FIH study is available.

In this FIH trial (NCT04104607, DKTK_PMO_1605), investigating CC-1 in patients with CRPC, CRS was the most frequently observed toxicity, experienced by 78% of the patients. Notably, it never exceeded grade 2 after pre-emptive tocilizumab application and resolved in most cases without additional application of tocilizumab. Besides mild to moderate hypertension (observed in 50% of patients), no further CC-1 related toxicities (i.e., anaphylactic reaction) were observed. As expected and attributable to tocilizumab application, hematologic events (i.e. neutropenia, thrombocytopenia) were present in most patients, and hepatotoxicity was observed in some patients.

As CC-3 is shares the biological function with CC-1 and other bsAb, a similar or even better safety profile is expected. Especially in comparison to CC-1, with CC-3 a lower risk for CRS is expected as the CD3 binder has been attenuated. In addition, nowdays CRS is a well-known class toxicity of bsAb and risk mitigation strategies by e.g. application of tocilizumab are available. The selected dosing scheme of CC-3 in this clinical trial will not only allow for continous exposure of tumor cells to CC-3, but it is also considered to increase the tolerability of CC-3 by introduction of priming doses. Moreover, CC-3 is applied during daytime when dedicated experienced study personnel is present and can ensure close monitoring of patients during and after CC-3 application.

02

Conditions studied

  • Colorectal Cancer
  • Breast Carcinoma
  • Sarcoma
  • Penile Carcinoma

Keywords

  • new therapy
  • bispecific antibody
  • colorectal cancer
03

In context

Colorectal Neoplasms

6,541 studies on the registry are indexed under Colorectal Neoplasms; 1,667 are open to participants now.

This study's planned enrollment of 89 is above the median of 76 across 4,800 interventional studies indexed under Colorectal Neoplasms.

Browse Colorectal Neoplasms studies →

Lead sponsor

German Cancer Research Center is the lead sponsor of 49 studies on the registry; 13 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

written signed

  • Patient is able to understand and comply with the protocol for the duration of the clinical trial including undergoing treatment and scheduled visits and examinations
  • Patients with progressing CRC who were previously treated with FOLFOX, FOLFIRI, FOLFOXIRI, TAS-102, or regorafenib, if applicable in combination with anti-VEGFR monoclonal antibody (mAb) and anti-EGFR mAb (the latter, if RAS-wild-type and left sided tumors).

In case of MSI-high/dMMR tumors, patients should have received therapy and at least two further of that stated above.

In case of patients BRAF V600E mutation patients should have received: Cetuximab in combination with encorafenib in second- or third-line treatment.

  • At least one that can be accurately assessed at baseline by CT or MRI and is suitable for repeated assessment per 1.1.
  • (ECOG) Performance Status ≤ 2
  • Patient aged ≥ 18, no upper limit
  • Female patients of child bearing potential (FCBP) and male patients with partners of child bearing potential, who are sexually active, must agree to the use of two effective forms (at least one highly effective method) of . This should be started from the signing of the informed consent and continue throughout period of taking study treatment and for 2 months after last dose of study drug.
  • For FCBP two negative pregnancy test (sensitivity of at least 25 mU/ml) prior to first application of CC-3
  • All subjects must agree to refrain from donating blood while on study drug and for 2 months after last dose of CC-3.
  • Adequate bone marrow, renal, and hepatic function defined by laboratory tests within 14 days prior to study treatment:

    • ≥ 9 g/dl (Transfusion of packed red blood cells prior to enrolment allowed)
    • ≥ 1,500/mm3
    • count ≥ 75,000/µl
    • Serum creatinine ≤ 1.5mg/dl or ≥ 60ml/min
    • hepatic function of patients without current hepatic metastasis:

      • ≤ 1.5x (ULN), in case of known Gilbert syndrome higher values are allowed if due to increase of indirect bilirubin
      • and AST ≤ 2.5 x ULN
    • hepatic function of patients with current hepatic metastasis:

      • Bilirubin ≤ 2.5 x upper limit of normal (ULN)
      • ALT and AST ≤ 5. x ULN

Exclusion criteria

Exclusion Criteria:

  • Other requiring treatment within the last year except: adequately treated non-melanoma skin cancer and low-grade non-muscle invasive papillary bladder cancer.
  • Concurrent or previous treatment within 30 days in another interventional clinical trial with an anticancer therapy
  • Persistent toxicity (≥ Grade 2 according to [CTCAE] version 5.0) caused by previous cancer therapy, excluding alopecia and neurotoxicity
  • Clinical signs of active infection (> grade 2 according to CTCAE version 5.0)
  • Known cerebral/meningeal manifestation of CRC
  • History of infection
  • Viral active or chronic hepatitis ( or )
  • Ongoing disease
  • History of relevant CNS pathology or current relevant CNS pathology (e.g. seizure, paresis, aphasia, cerebrovascular ischemia/hemorrhage, severe brain injuries, dementia, Parkinson's disease, cerebellar disease, organic brain syndrome, psychosis, coordination or movement disorder)
  • Therapeutic anticoagulation therapy
  • Major surgery within 4 weeks of starting study treatment. Patients must have recovered from any effects of major surgery.
  • Patients receiving any systemic chemotherapy, mAb or radiotherapy within 2 (for mAb 4) weeks prior to study treatment or a longer period depending on the defined characteristics of the agents used
  • Heart failure III/IV
  • Severe obstructive or restrictive ventilation disorder
  • Known intolerance to CC-3 or other immunoglobulin drug products as well as to any of the present in CC-3
  • Live and 30 days prior to treatment
  • Pregnant or breast-feeding women
  • Current ileus with severely altered GI function
Terms in these criteria, in plain language(26)

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.

Metastases

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

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.

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.

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.

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).

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Excipients

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

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.

05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
89 participants (estimated)

Study arms

  • Experimental
    Administration of CC-3, a bispecific CD276xCD3 antibody

    The DL in the accelerated titration phase is fixed in each patient and is applied once per week. The start dose for the first patient is 20µg. Dose increase in the next patient is determined by SRC, comprised of investigators and Sponsor, and can be up to 100% based on safety, PK and PD data. Accelerated titration is terminated and switched to a standard 3 + 3 design in case of any AE Grade ≥ 2 (except AEs unequivocally due to underlying disease or an extraneous cause), occurrence of DLT or decision of SRC based on PK, PD, and safety data. In the dose expansion part, additional patients are treated to have 20 evaluabale patients at the MTD level defined in the dose escalation part.

    Drug: Administration of CC-3

Interventions

  • DrugAdministration of CC-3

    Accelerated titration phase, Standard 3+3 titration phase, expansion phase

06

What researchers measure

Primary outcomes

  1. Safety 1-Adverse Events Assessment

    Dose escalation and dose expansion part: Characterization of the safety of CC-3 in patients with metastasized CRC, and to define the recommended phase-II dose (RP2D) of CC-3 Adverse events should be documented and recorded continuously. Patients have to be followed for AEs from visit T1V1( treatment week1 Visit 1) up to last clinical trial visit or until all drug-related toxicities have been resolved, whichever is later, or until the investigator assesses AEs as "chronic" or "stable". Each occurrence of an AE must be reported once indicating the CTC (Version 5.0) grade. If the CTC grading of an ongoing AE changes this has to be reported. If an event stops and later restarts, all occurrences must be reported. AEs will be coded using the Medical Dictionary for Regulatory Activities (MedDRA®) v26.0 or higher. All AEs will be graded according to the CTCAEv5.0, except for cytokine release syndrome, which will be graded according to modified criteria by Lee et al. (Lee et al., 2019).

    Time frame: Day 1 Day 2 Day 3 Day 8 +/- 1 day Day 9 Day 15 +/- 1 day Every 7 days +/- 2 days after Treatment week 3 7 days +/- 2 days after last CC-3 28 days +/- 2 days after last CC-3 28 days after FU +/- 3 days

  2. Safety 2 -Blood Chemistry-Transaminases

    AST/SGOT in \[U/l\] ALT/SGPT in \[U/l)

    Time frame: Day 1 Day 2 Day 3 Day 8 +/- 1 day Day 9 Day 15 +/- 1 day Every 7 days +/- 2 days after Treatment week 3 7 days +/- 2 days after last CC-3 28 days +/- 2 days after last CC-3 28 days after FU +/- 3 days

  3. Safety 3-Hematology-haemoglobin

    haemoglobin in \[g/l\]

    Time frame: Day 1 Day 2 Day 3 Day 8 +/- 1 day Day 9 Day 15 +/- 1 day Every 7 days +/- 2 days after Treatment week 3 7 days +/- 2 days after last CC-3 28 days +/- 2 days after last CC-3 28 days after FU +/- 3 days

  4. Safety 3-Hematology-Red Blood Cells

    RBC in \[cells/µl\]

    Time frame: Day 1 Day 2 Day 3 Day 8 +/- 1 day Day 9 Day 15 +/- 1 day Every 7 days +/- 2 days after Treatment week 3 7 days +/- 2 days after last CC-3 28 days +/- 2 days after last CC-3 28 days after FU +/- 3 days

  5. Safety 3-Hematology-thrombocytes

    PLT in \[cells/µl\]

    Time frame: Day 1 Day 2 Day 3 Day 8 +/- 1 day Day 9 Day 15 +/- 1 day Every 7 days +/- 2 days after Treatment week 3 7 days +/- 2 days after last CC-3 28 days +/- 2 days after last CC-3 28 days after FU +/- 3 days

  6. Safety 3-Hematology-White Blood Cells

    WBC in \[cells/µl\]

    Time frame: Day 1 Day 2 Day 3 Day 8 +/- 1 day Day 9 Day 15 +/- 1 day Every 7 days +/- 2 days after Treatment week 3 7 days +/- 2 days after last CC-3 28 days +/- 2 days after last CC-3 28 days after FU +/- 3 days

07

Study locations

1 of 1 sites recruiting
08

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Started Jan 2024 (actual). Primary completion is estimated for Oct 2026, 33 months after the start.

Of 166 non-industry phase 1 interventional studies under Colorectal Neoplasms, half reached primary completion within 49 months of starting (the median), counting those still running; a quarter within 31 and three quarters within 74. This study's planned 33 months is below that.

Counting every sponsor, half of 434 studies reached it within 48 months; a quarter within 31 and three quarters within 69.

How these figures are worked out, and which studies are left out of them.

Registered
Jul 20, 2023
First posted
Aug 21, 2023
StartActual
Jan 12, 2024
Primary completionEst.
Oct 30, 2026
CompletionEst.
Mar 31, 2027
Last update
May 21, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on May 21, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT05999396
Lead sponsor
German Cancer Research Center
Responsible party
Sponsor
First posted
Aug 21, 2023
Start date
Jan 12, 2024
Primary completion
Oct 30, 2026 (estimated)
Completion
Mar 31, 2027 (estimated)
Last update
May 21, 2025

Study contacts

Juliane Walz, Prof. Dr.
Contact
kketi@med.uni-tuebingen.de
+49 7071 29 ext. 83275
Jonas Heitmann, Dr.
Contact
kketi@med.uni-tuebingen.de
+49 7071 29

Oversight

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

Interested in this study?

Eligibility is decided by the study team. Share this record with your doctor or contact the team directly.

Contact study team

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

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.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

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

Start the discussion