DPD deficiency in an Irish oncology centre: Prevalence and clinical implications.

INTRODUCTION: Fluorouracil (5FU) and capecitabine are metabolised by dihydropyrimidine dehydrogenase (DPD). Up to 9% of people have low levels of a working DPD enzyme and are at risk of severe toxicity from 5FU/capecitabine. In April 2020, the EMEA recommended patients undergo prospective screening for DPD deficiency before starting treatment, and this was introduced in our hospital. METHODS: We retrospectively reviewed records of all patients receiving 5FU/capecitabine in a tertiary Irish cancer centre from May 2020 to April 2021 (n = 197), and those starting first-line treatment in May 2019-April 2020 (n = 97). Our primary outcome was to estimate the prevalence of DPYD variant genes by prospective genotypic screening, with secondary outcomes including variant prevalence by prospective and reactive screening in patients receiving first-line treatment, and 5FU toxicity/tolerability in those with detected variants. RESULTS: In those treated 2020-2021, cancer subtypes included colorectal (n = 120, 61%), breast (n = 34, 17%), and biliary/pancreatic cancers (n = 21, 11%). Median patient age was 62 (range 25-86 years); 40% (n = 79) of patients were screened overall, with a prospective-screening deficiency prevalence of 6.8% (n = 3 of 44). Three patients had pathogenic DPYD-variants detected by prospective screening and tolerated treatment with 50% up-front dose reduction of 5FU, two had variants of uncertain significance detected by reactive screening. DISCUSSION: Other Irish studies estimated prevalence at 11-12%. As the number of variants detected was small, and screening rates were incomplete, our study may have underestimated prevalence. CONCLUSIONS: Approximately 6.8% of Irish patients may carry DPD deficiencies, prospective screening is essential to reduce the risk of life-threatening toxicity in these patients.

Assessing the Quality of Care Delivered to Transgender and Gender Diverse Patients with Cancer in Ireland: A Case Series.

INTRODUCTION: "Transgender" and "gender diverse" are umbrella terms encompassing those whose gender identities or expressions differ from those typically associated with the sex they were assigned at birth. There is scant global information on cancer incidence, outcome, and mortality for this cohort. This group may present with advanced cancer, have mistrust in health care services and report anxiety and depression at higher frequencies, a finding often seen in marginalized groups because of minority stress. MATERIALS AND METHODS: Medical oncologists were contacted by secure email to identify patients who self-identify as transgender and gender diverse in three Irish hospitals. Five patients were identified. A retrospective chart review was conducted and a pseudonymized patient survey was distributed. RESULTS: All patients included in our chart review (n = 5) were diagnosed with advanced disease on initial diagnosis. Two patients identified as men, two as women, and one as a transwoman. Two of five patients' health record charts reflected a name or gender change. Three patients had gender transitioning treatment postponed. Assessing comorbidities, it was seen that four patients required psychiatry input. Predominant issues noted in our patient survey by the two respondents (n = 2) were "mis-gendering," lack of a gender-neutral hospital environment, lack of inclusion in cancer groups, and barriers in changing name and/or sex on hospital records. CONCLUSION: Components of care requiring revision include patient accessible pathways to change names and gender on health records, earlier access to psychological support and targeted screening and support groups. Resources for hospital staff to improve awareness of correct terminology and to provide gender neutral facilities are worthwhile. IMPLICATIONS FOR PRACTICE: The implications for practice on an international level include patient-friendly pathways for changing hospital name and gender so that patients may feel comfortable using wristbands. The need for international screening guidelines for transgender patients and national transgender cancer support groups is highlighted. On a day-to-day level for providers, the correct use of pronouns makes a big difference to patients. Asking about preferred pronoun on first visit and noting on patient's file is worthwhile. It is important for providers to know that increased psychological support should be offered early on first clinic visit and engaged with as necessary when patient has a history of anxiety or depression. Providers should discuss openly that some gender transitioning treatment will be postponed because of cancer care and refer to both the physical and psychological sequelae of this. Asking transgender patients which room or bathroom they would prefer when rooms are gendered is essential.

Emerging targeted therapies and strategies to overcome resistance in biliary tract cancers.

In the last decade, targeted therapies have shown rapid advancement in biliary tract cancer (BTC). Today, many targeted agents are available and under investigation for patients with BTC. More recently, immune checkpoint inhibitors (ICI) such as durvalumab and pembrolizumab in combination with gemcitabine plus cisplatin (gem/cis) have resulted in improved overall survival and progression-free survival in the first-line setting. However, the efficacy benefit of these novel therapeutics is often short-lived, with literature outlining concerns about both primary and secondary resistance to these agents. Investigators also need to consider toxicity profiles that can emerge using this strategy. There have been efforts to reduce evolving resistance through combinatory approaches, both pre-clinically and in early clinical settings. This review summarizes the emerging targeted therapies in BTC, evolving biomarkers of resistance, strategies to overcome them, and an analysis of ongoing clinical trials of patients with advanced BTC.

Efficacy of Systemic Treatments in Patients With Metastatic Lung Invasive Mucinous Adenocarcinoma.

BACKGROUND: Invasive mucinous adenocarcinoma (IMA) is a rare histological subtype of lung invasive adenocarcinoma with unique clinical, radiological, histopathological, and genomic characteristics. There have been limited studies on the effectiveness of systemic therapy for lung IMA, with conflicting results reported. METHODS: We retrospectively investigated the medical records of patients diagnosed with lung IMA. Patients who were ≥ 18 years of age and received at least 1 course of treatment for metastatic or locally advanced inoperable disease were included in the study. Archive records of 113 patients diagnosed with IMA were screened for the study. RESULTS: A total of 41 patients with lung IMA were included. The targetable mutation rate was 20.6% (in 6 of 29 patients). Most patients (83.1%) had received platinum-based chemotherapy as a first-line treatment. The objective response rate (ORR) was 25.7%, and median progression-free survival (PFS) and overall survival (OS) were 8.1 months (95% CI, 5.02-11.2) and 17.5 months (95% CI, 11.7-23.3 months), respectively, in the patients who received chemotherapy. The median PFS and ORR were 20.6 (95% CI, 18.9-66.5) and 66.6%, respectively, in epidermal growth factor receptor (EGFR) mutation-positive patients (n = 3) with relevant targeted therapy. Only 1 patient used oxaliplatin and capecitabine combination (XELOX) as chemotherapy in the second-line treatment and achieved a partial response (PR) at 7.2 months. CONCLUSION: Platinum-based chemotherapies moderately enhance IMA patients' survival rates. Anti-EGFR-targeted drugs are seen as potentially effective in patients with EGFR driver mutation positive. Large, prospective studies are needed to confirm our findings.

Patient knowledge, personal experience, and impact of the first wave of the COVD-19 pandemic in an Irish oncology cohort.

BACKGROUND: Oncology patients have had to make many changes to minimise their exposure to COVID-19, causing stress. Despite education, some patients still do not recognise potential COVID symptoms. AIMS: We assessed patient knowledge of COVID, and its impact on their behaviours, concerns, and healthcare experience. METHODS: A 16-page questionnaire was distributed to 120 oncology patients attending the day unit of a tertiary Irish cancer centre for systemic anti-cancer therapy (May/June 2020). The Irish 7-day COVID incidence during this period ranged from 2 to 11 cases/100,000 people. RESULTS: One hundred and one responses were received, 1% had tested positive for COVID, and 31% had undergone testing. Participant insight into their knowledge about COVID and their own behaviour was limited in some cases. Seventy-five percent reported total compliance with restrictions, but many were not fully compliant. Self-reported confidence in knowledge was high, but did not predict demonstrated knowledge. Sixty percent did not recognise two or more symptoms; 40% did not self-identify as high-risk. Patients reported more health-related worry (72%), loneliness (51%), and lower mood (42%) since the pandemic began. Financial toxicity worsened, with increased financial worry (78%), reductions in household income (40%), and increased costs due to lockdown (62%). Use of facemasks introduced new communications barriers for 67% of those with hearing loss. CONCLUSIONS: Despite self-reported confidence in knowledge, some patient's recognition of COVID symptoms and the preventative strategies they should use are not optimal, highlighting the need for further education in this regard. COVID has been a significant stressor for patients and more practical, financial, and psychological supports are needed.

Underserved groups remain underserved as eligibility criteria routinely exclude them from breast cancer trials.

OBJECTIVES: Under-served groups are populations unrepresented or disengaged from medical research or services despite a disproportionately high healthcare burden. Under-served groups may be directly (age, pregnancy as examples) or indirectly excluded (provision of written information in one language only as an example) from trial enrollment by strict eligibility exclusions. The purpose of our study was to assess eligibility criteria in published phase III breast cancer clinical trials to determine whether they excluded underserved groups either directly or indirectly. STUDY DESIGN AND SETTING: Medline was searched for phase III randomized controlled trials evaluating interventional drugs for breast cancer in high-impact journals published between January 1st, 2010 and December 31st, 2020. A total of 5133 eligible trials were returned, and 40 were selected, by simple randomization, for inclusion. RESULTS: All 40 trials had multiple exclusions that affected the recruitment of underserved groups. Clinical or scientific rationale for the recorded inclusion and exclusion criteria was underreported in 39 of 40 trials. CONCLUSION: Clinical trial eligibility criteria exclude underserved groups from breast cancer trials. Trialists should provide a justification for each eligibility criterion, and funders, reviewers, ethics committees, and others should demand one. Without this, underserved groups will remain just that: underserved.