This pilot study will test the feasibility of using nanopore sequencing for breast cancer diagnosis in Tanzania. It aims to show that nanopore sequencing is non-inferior to the current standard of care, with the potential for faster and more cost-efficient results. By enhancing the speed and accuracy of diagnosis, this approach could improve treatment planning and outcomes for patients in resource-limited settings.
Excess fresh tissue samples from patients with suspected breast cancer will undergo nanopore sequencing alongside the current standard of care (SoC), which includes histopathology and biomarker analysis for estrogen receptor, progesterone receptor, and human epidermal growth factor receptor 2 (HER2) status. Low-pass whole genome sequencing and DNA methylation-based classification will potentially enable the diagnosis of invasive ductal breast cancer in a cost-efficient and highly accurate manner. Additionally, breast cancer subtypes can be determined using methylation signatures and HER2 focal amplification, with results available within hours in a point-of-care setting. The primary outcome measures are non-inferiority compared to SoC, turnaround time, and overall feasibility. Treatment is not altered due to results of the nanopore sequencing.
Study Type
OBSERVATIONAL
Enrollment
100
Kilimanjaro Christian Medical Centre
Moshi, Tanzania
RECRUITINGNon-inferiority of nanopore-based biomarker evaluation
Concordance of invasive breast cancer diagnosis using nanopore sequencing vs. IHC HR/HER2 status as standard of care. The concordance will be expressed as the percentage agreement between the two methods across 100 patients.
Time frame: Concordance will be assessed after the enrollment of each cohort of 25 patients, with the final evaluation after study completion, approximately 12 months from enrollment start.
Feasibility
Feasibility will be measured by calculating the ratio of samples that are successfully sequenced and analyzed using nanopore sequencing technology, compared to the total number of samples processed.
Time frame: The ratio will be assessed continuously after the sequencing of each batch of samples, with the final evaluation at study completion, approximately 12 months from enrollment start.
Turnaround time
Turnaround time will be measured as the time (in days) from biopsy to the availability of the nanopore sequencing report, compared to the time from biopsy to the finalized pathology report.
Time frame: Through study completion, an average of 1 year
Quality of Life (QoL) as assessed by the EORTC-QLQ BR-45 questionnaire
Quality of Life (QoL) will be measured using the EORTC-QLQ BR-45 questionnaire. The questionnaire will be administered at baseline and at multiple time points during the study, with changes in QoL scores compared over time. It is available in Swahali and in case of illiteracy will be read to the patient.
Time frame: Administered at baseline, 6 months and 12 months.
Patient Reported Experiences (PREs) with diagnostic procedures using a custom questionnaire
Patient-reported experiences related to the diagnostic procedures, including the ease of sample collection, the perceived length of time for results, and overall comfort during procedures, will be assessed using a custom questionnaire.
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Time frame: Administered within 24-48 hours post-biopsy.