Patient acceptability of circulating tumour DNA testing in endometrial cancer follow-up

Patient perceptions underlying ctDNA molecular surveillance for HPV(+) oropharyngeal squamous cell carcinoma

OBJECTIVE

Circulating tumor DNA assays have robust potential as molecular surveillance tools. They may also exacerbate patient distress without improving outcomes. We investigate patient acceptability of a validated ctHPVDNA assay (NavDx) during cancer surveillance for HPV(+) oropharyngeal cancer (OPC).

METHODS

Consented HPV(+) OPC participants completed the NCCN Distress Thermometer, the Hospital Anxiety Depression Scale (HADS), and the Functional Assessment of Cancer Therapy-General (FACT-G) scale both (1) before NavDx blood draw, and (2) after results were provided. Patients then completed a series of focused questions related to their perceptions of the assay.

RESULTS

Overall, 55 patients completed the study, with 98.2 % showing no recurrence. For the NCCN Distress Thermometer, median patient distress decreased (2.0 (IQR 1-5) vs. 1.0 (IQR 0-3)) (p < 0.001) in association with NavDx. Using scores ≥ 4 as a cutoff point to define clinically elevated distress, scores also improved (36.4 % vs. 18.2 %, p = 0.031). For HADS, anxiety significantly improved (5.0 (IQR 2.0-7.0) vs. 3.0 (IQR 1.0-6.5)) (p = 0.037), but not depression (3.0 (IQR 1.0-7.0) vs. 3.0 (IQR 1.0-6.5)) (p = 0.870). FACT-G scores showed no substantial differences. On survey questionnaires, 95.5 % of patients believed the test to be helpful, and 100 % felt "somewhat" or "extremely" confident in the assay as a monitoring tool. While 59.1 % felt that it reduced anxiety, 88.4 % concordantly felt that it did not introduce anxiety.

CONCLUSION

ctHPVDNA as a molecular surveillance tool reduced distress levels in HPV(+) OPC patients, with notably high patient confidence in the approach. Further investigation is warranted to judiciously incorporate this emerging modality in surveillance guidelines.

Qualitative exploration of uterine cancer care for lesbian, gay, bisexual, trans and queer (LGBTQ+) patients in the UK: shifting from equality to equity

OBJECTIVE

Patients identifying as lesbian, gay, bisexual, transgender and/or queer/questioning (LGBTQ+) report significant disparities in cancer care and are disproportionally affected by a cancer diagnosis on a number of health-related indicators. This study aimed to explore uterine cancer (UC) care from the perspectives of LGBTQ+ patients and stakeholders, to identify this population's care needs, which have been underprioritised thus far.

METHODS AND ANALYSIS

Qualitative interview data were collected from three cohorts of participants: LGBTQ+ UC patients, partners of UC patients and stakeholders who provide advocacy and/or support within the UC care pathway, including healthcare professionals (HCPs). Semi-structured qualitative interviews were conducted and data were analysed using inductive reflexive thematic analysis.

RESULTS

Fifteen participants (three patients, one partner, eight HCPs and three cancer support charity representatives) were recruited. Data analysis identified themes which represented participants' reflections on the relevance and opportunities for identity disclosure during the diagnostic pathway; feelings and implications of not fitting into the gynaecological cancer environment and, opportunities and challenges surrounding HCP education, and protocolled sexual and gender identity data collection.

CONCLUSION

UC patients who identify as LGBTQ+ have specific care needs and considerations, particularly related to transvaginal procedures and survivorship. Opportunities for disclosure of patients' LGBTQ+ identity during the UC care pathway are essential for these needs to be recognised. Despite this, there are conflicting agendas between HCPs and stakeholders on the best approach to integrate disclosure processes. The current findings highlight the need for public health agendas and clinical services to address the needs of LGBTQ+ UC patients.

Tumor-Informed Circulating Tumor DNA for Minimal Residual Disease Detection in the Management of Colorectal Cancer

PURPOSE

Recurrence after curative-intent treatment occurs in 20%-50% of patients with stage II-IV colorectal cancer (CRC), underscoring the need for early detection of minimal residual disease (MRD) using circulating tumor DNA (ctDNA). Here, we examined the pattern of use of a tumor-informed ctDNA assay in CRC MRD monitoring in routine clinical practice at Mayo Clinic, Rochester.

METHODS

We conducted a retrospective analysis of health records of patients with CRC who had at least one tumor-informed ctDNA assay from May 2019 through July 1, 2022. Recurrence was defined as radiographic evidence of disease. Descriptive characteristics of the cohort, ctDNA results, and subsequent interventions were recorded.

RESULTS

Of the 120 patients included, the median age at diagnosis was 67 years, 46% were female, and 94% were White. At diagnosis, 10 patients had stage I, 23 stage II, 60 stage III, and 25 stage IV disease. Of 476 ctDNA assays performed, 70% were performed in patients who had recurrent disease most commonly to monitor the effectiveness of therapeutic interventions and 16% resulted in a change in clinical decision making. There were 110 recurrences identified in 62 patients, as some patients experienced more than one recurrence over time. Compared with serum carcinoembryonic antigen levels, ctDNA results correlated better with radiologic imaging.

CONCLUSION

Routine ctDNA monitoring for MRD detection has been adopted in clinical practice; however, 84% of ctDNA assays performed did not result in a change in clinical management. This suggests the need for further clinical research data to guide routine clinical use of ctDNA MRD testing in CRC.

Potential biomarkers in endometrial cancer: a narrative review

CONTEXT

Every year, approximately 0.4 million women suffer from endometrial cancer (EC) worldwide and it has become the most common gynecological malignancy. Almost 66% of EC cases are diagnosed at an early stage and can be cured by performing surgery while those at an advanced stage turns out to be fatal. Biomarkers of endometrial cancer would be very valuable for screening of women who are at high risk and in detecting the chance of recurrence of disease.

OBJECTIVE

The current article has reviewed studies published on expression of biomarkers and susceptibility to EC.

METHODS

Google Scholar and PubMed were used as searching platforms and we have majorly considered the literature from last 10 years.

RESULTS

Potential biomarkers of EC identified from various studies were summarised.

Risk Stratified Follow-Up for Endometrial Cancer: The Clinicians' Perspective

Risk-stratified follow-up for endometrial cancer (EC) is being introduced in many cancer centres; however, there appears to be diversity in the structure and availability of schemes across the UK. This study aimed to investigate clinicians' and clinical specialist nurses' (CNS) experiences of follow-up schemes for EC, including patient-initiated follow-up (PIFU), telephone follow-up (TFU) and clinician-led hospital follow-up (HFU). A mixed-methods study was conducted, consisting of an online questionnaire to CNSs, an audience survey of participants attending a national "Personalising Endometrial Cancer Follow-up" educational meeting, and qualitative semi-structured telephone interviews with clinicians involved in the follow-up of EC. Thematic analysis identified three main themes to describe clinicians' views: appropriate patient selection; changing from HFU to PIFU schemes; and the future of EC follow-up schemes. Many participants reported that the COVID-19 pandemic impacted EC follow-up by accelerating the transition to PIFU/TFU. Overall, there was increasing support for non-HFU schemes for patients who have completed primary treatment of EC; however, barriers were identified for non-English-speaking patients and those who had communication challenges. Given the good long-term outcome associated with EC, greater focus is needed to develop resources to support patients post-treatment and individualise follow-up according to patients' personal needs and preferences.

Posttranslational modifications induce autoantibodies with risk prediction capability in patients with small cell lung cancer

Small cell lung cancer (SCLC) elicits the generation of autoantibodies that result in unique paraneoplastic neurological syndromes. The mechanistic basis for the formation of such autoantibodies is largely unknown but is key to understanding their etiology. We developed a high-dimensional technique that enables detection of autoantibodies in complex with native antigens directly from patient plasma. Here, we used our platform to screen 1009 human plasma samples for 3600 autoantibody-antigen complexes, finding that plasma from patients with SCLC harbors, on average, fourfold higher disease-specific autoantibody signals compared with plasma from patients with other cancers. Across three independent SCLC cohorts, we identified a set of common but previously unknown autoantibodies that are produced in response to both intracellular and extracellular tumor antigens. We further characterized several disease-specific posttranslational modifications within extracellular proteins targeted by these autoantibodies, including citrullination, isoaspartylation, and cancer-specific glycosylation. Because most patients with SCLC have metastatic disease at diagnosis, we queried whether these autoantibodies could be used for SCLC early detection. We created a risk prediction model using five autoantibodies with an average area under the curve of 0.84 for the three cohorts that improved to 0.96 by incorporating cigarette smoke consumption in pack years. Together, our findings provide an innovative approach to identify circulating autoantibodies in SCLC with mechanistic insight into disease-specific immunogenicity and clinical utility.

Clinical application of liquid biopsy in endometrial carcinoma

Endometrial cancer is the most common gynecological malignant tumor in women, and its morbidity and mortality have been rising in recent years. Over the past two decades, the diagnosis, prognosis, and therapeutic strategies for endometrial cancer have not significantly improved, and reliable biomarkers for detecting and monitoring EC recurrence and progression remain limited. Tumor genome analysis identified molecular alterations related to the growth and progression of endometrial cancer, but these data are incomplete. Recently, through extensive exploration of liquid biopsy, it has been determined that circulating tumor cells and circulating tumor DNA can lay a foundation for real-time and non-invasive monitoring of tumors and provide novel insights into cancer evolution, invasion, and metastasis. Hence, this review aimed to analyze the value of liquid biopsy in endometrial cancer screening, early diagnosis, treatment response, and prognosis monitoring in order to prolong the survival time of EC patients.

Liquid biopsies for residual disease and recurrence

Detection of minimal residual disease in patients with cancer, who are in complete remission with no cancer cells detectable, has the potential to improve recurrence-free survival through treatment selection. Studies analyzing circulating tumor DNA (ctDNA) in patients with solid tumors suggest the potential to accurately predict and detect relapse, enabling treatment strategies that may improve clinical outcomes. Over the past decade, assays for ctDNA detection in plasma samples have steadily increased in sensitivity and specificity. These are applied for the detection of residual disease after treatment and for earlier detection of recurrence. Novel clinical trials are now assessing how assays for "residual disease and recurrence" (RDR) may influence current treatment paradigms and potentially change the landscape of risk classification for cancer recurrence. In this review, we appraise the progress of RDR detection using ctDNA and consider the emerging role of liquid biopsy in the monitoring and management of solid tumors.

Innovative Follow-up Strategies for Endometrial Cancer

Increasing recognition of the heterogeneous nature of endometrial cancer, the excellent prognosis of low-risk cases and improvements in risk stratification offer opportunities for innovative, personalised follow-up strategies. This review article outlines the evidence base for alternative follow-up strategies in the different risk categories of endometrial cancer, cancer survivorship programmes and considers future directions in endometrial cancer follow-up, including emerging new techniques, such as the liquid biopsy, and opportunities for combining molecular and clinicopathological features to personalise endometrial cancer follow-up.