Clinical trial NCT06816160: TRU-Cut Biopsy in Tumor cHaracterisation
Official title: Tru-cut Biopsy in Tumor Characterisation
Study type: OBSERVATIONAL
Overall status: RECRUITING
Conditions: Tumor
Keywords: tumor
biopsy
tru-cut
core-cut
cancer
pelvic tumor
Lead sponsor: General University Hospital, Prague
Sponsor class: OTHER
First posted: 2025-02-10
Enrollment: 250
Sex: FEMALE
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: Women with abdominopelvic tumor

Brief summary: Tru-cut biopsy (TCB) is a minimally invasive method to get an adequate sample from the lesion in order to tailor the appropriate management avoiding unnecessary surgery. The aim of our trial is to evaluate the adequacy, accuracy and safety of the method related to the final histology as reference standard.

Detailed description: The primary endpoint is represented by the assessment of adequacy, accuracy and safety of the procedure in prospective settings. The secondary endpoint is to evaluate feasibility of immunohistochemistry (IHC), next generation sequencing (NGS) and tumor immunology in obtained samples by TCB and to assess the alterations of these tumor characteristics in relation to the treatment. The additional endpoint includes the effect of several variables (e.g. tumor origin, size of the tumor, presence of ascites, body mass index (BMI), biopsy site, biopsy approach - transvaginal, transrectal vs. transabdominal, status of the disease - the first diagnosis, the first and other recurrence or progression and previous treatment modality - chemotherapy, anti-angiogenic therapy, PARP inhibitor therapy, hormonal therapy, radiotherapy) on the outcome of the procedure (adequacy, accuracy and safety).

All patients indicated for tru-cut biopsy (including advanced stages of ovarian, endometrial or cervical cancers) in Gynecologic Oncology Center of the General University Hospital from February 2024 to January 2026 will be recruited. Furthermore, all patients with suspicious recurrence or progression of already known gynecologic malignancy based on the imaging methods will be recruited. The duration of recruitment is 3 years, and we expect 250 patients enrolled into the trial. Data will be assessed in relation to the patient characteristics, tumor/lesion characteristics, procedure specifications, histopathological characteristics and IHC/NGS/immunological characteristics, consequent biopsy/surgery and final histopathological results. All adverse events will be recorded. Moreover, patient related outcomes will be recorded within 72 hours after the procedure.

This prospective study could support our hypothesis that TCB is feasible and safe procedure with high adequacy and accuracy rate. It enables to get appropriate outcomes of IHC, NGS and immunology preoperatively. We expect that TCB is applicable and efficient in majority of recurrences/disease progressions, so it can be considered suitable technique for de novo biopsy. It can help us show the alterations of tumor characteristics after the previous treatment and can be used to select appropriate targeted therapy.

Eligibility criteria: Inclusion Criteria: Presence of a pelvic/abdominal lesion with suspicion of malignancy:

1. new diagnosis of a presumed gynecologic tumor
2. suspicious recurrence or progression of a known gynecologic malignancy
3. pelvic/abdominal spread or recurrence of a non-gynecologic tumor (primary tumor or metastasis)
4. pelvic/abdominal spread of a tumor of unknown origin 2. Age ≥18 years 3. Eastern Cooperative Oncology Group (ECOG) performance status grade \<3 4. Not pregnant 5. Signed informed consent form

Exclusion Criteria:

1. Considered by the investigator to be unsuitable for any treatment
2. Early stage disease
3. Age \<18 years

Primary outcomes:
measure: The adequacy of samples obtained by TCB for histopathological examination (in %)
timeFrame: First data 31st of June 2025, definitive data 31st of January 2026
Secondary outcomes:
measure: The adequacy of samples obtained by TCB for next-generation sequencing examination (in %)
timeFrame: First data 31st of June 2025, definitive data 31st of January 2026
measure: The adequacy of samples obtained by TCB for immunohistochemistry examination (in %)
timeFrame: First data 31st of June 2025, definitive data 31st of January 2026
measure: The adequacy of samples obtained by TCB for immunologic examination (in %)
timeFrame: First data 31st of June 2025, definitive data 31st of January 2026
Other outcomes:
measure: 1. To evaluate which factors affect the primary and secondary endpoints 2. To evaluate the overall safety of TCB (in %) 3. To evaluate the overall accuracy of TCB for complex classification of pelvic and abdominal tumors (in %)
timeFrame: First data 31st of June 2025, definitive data 31st of January 2026
measure: Overall safety of TCB (in %)
timeFrame: First data 31st of June 2025, definitive data 31st of January 2026
measure: Overall accuracy of TCB for complex classification of pelvic and abdominal tumors (in %)
timeFrame: First data 31st of June 2025, definitive data 31st of January 2026
Locations:
city: Praha
country: Czechia
facility: Department of Gynecology, Obstetrics and Neonatology of First Faculty of Medicine and General University Hospital in Prague
Study officials:
affiliation: Department of Gynecology, Obstetrics and Neonatology
name: David Cibula, prof.
role: STUDY_CHAIR
References: