Publications by authors named "Clare Peckitt"

Early diagnosis remains a major limitation of cancer outcomes with ethnicity and deprivation being determinants of inequalities that impact outcomes. Prostate cancer suffers from lower incidence rates and higher mortality rates in the most deprived versus the least deprived groups. We developed the 'Man Van' to enable high-risk male patients' from deprived communities and ethnic minorities increased access to health care to address these health inequalities.

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Purpose: The absence of postoperative circulating tumor DNA (ctDNA) identifies patients with resected colorectal cancer (CRC) with low recurrence risk for adjuvant chemotherapy (ACT) de-escalation. Our study presents the largest resected CRC cohort to date with tissue-free minimal residual disease (MRD) detection.

Experimental Design: TRACC (tracking mutations in cell-free tumor DNA to predict relapse in early colorectal cancer) included patients with stage I to III resectable CRC.

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Background: This study aimed to identify microRNAs (miRs) as circulating biomarkers of resistance to first-line trastuzumab-based therapy in advanced HER2-positive oesophago-gastric cancer patients.

Methods: A high-throughput 1015 Exiqon miRCURY LNA™ microRNA inhibitor library screen was performed in trastuzumab-treated HER2-positive NCI-N87 and HER2-negative FLO-1 oesophago-gastric cancer cell lines. NanoString nCounter miR analysis was performed in NCI-N87, FLO-1, and MAGIC trial (ISRCTN93793971) formalin-fixed paraffin-embedded (FFPE) oesophago-gastric cancer patient samples.

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Article Synopsis
  • The UK's first multi-centre study is exploring whether using circulating tumor DNA (ctDNA) to guide adjuvant chemotherapy decisions is just as effective as standard treatment for early-stage colorectal cancer patients without minimal residual disease (MRD).
  • The study involves recruiting patients with high-risk stage II and III colorectal cancer, who will be randomly assigned to receive ctDNA-guided chemotherapy or standard chemotherapy to compare their 3-year disease-free survival rates.
  • The research aims to potentially spare patients from unnecessary chemotherapy, reduce toxicity, and save costs for the National Health Service (NHS), while targeting a total of 1621 participants across about 50 UK centers over four years.
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Article Synopsis
  • The study examined the collection and reporting of patient-reported outcome (PRO) measure data from interventional trials at the Royal Marsden NHS Foundation Trust, focusing on protocol content and data completeness.
  • A total of 26 out of 65 studies were reviewed, with 19 having available datasets; 14 of these published PRO results and most had clinical primary outcomes instead of PROs.
  • Average scores on the SPIRIT-PRO checklist for trial protocols were 46.7, while publications scored an average of 80.9 on the CONSORT-PRO checklist, indicating variability in how well protocols and results were reported.
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Objective: To improve communication of harm in publications of randomised controlled trials via the development of recommendations for visually presenting harm outcomes.

Design: Consensus study.

Setting: 15 clinical trials units registered with the UK Clinical Research Collaboration, an academic population health department, Roche Products, and .

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Objective: Epidermal growth factor receptor (EGFR) inhibition may be effective in biomarker-selected populations of advanced gastro-oesophageal adenocarcinoma (aGEA) patients. Here, we tested the association between outcome and copy number (CN) in pretreatment tissue and plasma cell-free DNA (cfDNA) of patients enrolled in a randomised first-line phase III clinical trial of chemotherapy or chemotherapy plus the anti-EGFR monoclonal antibody panitumumab in aGEA (NCT00824785).

Design: CN by either fluorescence in situ hybridisation (n=114) or digital-droplet PCR in tissues (n=250) and plasma cfDNAs (n=354) was available for 474 (86%) patients in the intention-to-treat (ITT) population.

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Purpose: To compare cisplatin plus fluorouracil (FU) versus carboplatin plus paclitaxel in chemotherapy-naïve advanced anal cancer to establish the optimal regimen.

Patients And Methods: Patients who had not received systemic therapy for advanced anal cancer were randomly assigned 1:1 to intravenous cisplatin 60 mg/m (day 1) plus FU 1,000 mg/m (days 1-4) every 21 days or carboplatin (area under the curve, 5; day 1) plus paclitaxel 80 mg/m (days 1, 8, and 15) every 28 days for 24 weeks, until disease progression, intolerable toxicity, or withdrawal of consent. Primary end point was objective response rate (ORR).

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Introduction: Chemotherapy is the mainstay of treatment for patients with advanced soft tissue sarcomas (STS). Treatment intent is usually palliative, aiming to improve symptoms, stabilise or reduce tumour burden and extend life. Clinical trials have traditionally used radiological response, time to progression and survival as measures of treatment efficacy.

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Outcome of patients with relapsed/refractory (r/r) diffuse large B-cell lymphoma (DLBCL) remains poor, highlighting the need for novel treatment approaches. The multicentre randomised phase II LEGEND trial evaluated lenalidomide in combination with rituximab, methylprednisolone and gemcitabine (R-GEM-L) vs. standard R-GEM-P as second-line treatment of DLBCL.

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Background: Sex contributes to interpatient variability of chemotherapy metabolism and dose response, potentially influencing both efficacy and toxicity; however, comparative data on its effect on oesophagogastric cancer are lacking.

Patients And Methods: Data for patients with advanced oesophagogastric cancer randomised to comparable first-line chemotherapy regimens within four United Kingdom prospective trials were pooled, and key demographic and outcome measures were compared between males and females.

Results: A total of 1654 patients were included: 1328 (80.

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Despite biomarker stratification, the anti-EGFR antibody cetuximab is only effective against a subgroup of colorectal cancers (CRCs). This genomic and transcriptomic analysis of the cetuximab resistance landscape in 35 RAS wild-type CRCs identified associations of NF1 and non-canonical RAS/RAF aberrations with primary resistance and validated transcriptomic CRC subtypes as non-genetic predictors of benefit. Sixty-four percent of biopsies with acquired resistance harbored no genetic resistance drivers.

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Purpose: Anti-EGFR mAbs are effective in the treatment of metastatic colorectal cancer (mCRC) patients. status and tumor location (sidedness) are predictive markers of patients' response to anti-EGFR mAbs. Recently, low miR-31-3p expression levels have been correlated with clinical benefit from the anti-EGFR mAb cetuximab.

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Background: Homologous recombination deficiency (HRD) measured using a genomic signature for loss of heterozygosity (LOH) predicts benefit from rucaparib in ovarian cancer. We hypothesized that some oesophagogastric cancers will have high-LOH which would be prognostic in patients treated with platinum chemotherapy.

Methods: Diagnostic biopsy DNA from patients treated in the REAL3 trial was sequenced using the Foundation Medicine T5 next-generation sequencing (NGS) assay.

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Sequential profiling of plasma cell-free DNA (cfDNA) holds immense promise for early detection of patient progression. However, how to exploit the predictive power of cfDNA as a liquid biopsy in the clinic remains unclear. RAS pathway aberrations can be tracked in cfDNA to monitor resistance to anti-EGFR monoclonal antibodies in patients with metastatic colorectal cancer.

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Background: In patients presenting with peripheral lymphadenopathy, it is critical to effectively identify those with underlying cancer who require urgent specialist care.

Methods: We analyzed a large dataset of 1000 consecutive patients with unexplained lymphadenopathy referred between 2001 and 2009 to the Royal Marsden Hospital (RMH) rapid access lymph node diagnostic clinic (LNDC).

Results: Cancer was diagnosed in 14% of patients.

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Background: Although progress has been made in the molecular stratification of esophagogastric adenocarcinoma, the outlook for advanced disease remains poor. The present evaluation of over 500 patients treated at a single European high-volume tertiary center during a 6-year period gives important information on current and developing "real-world" treatment patterns and outcomes.

Results: The overall survival for the whole cohort was 11.

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Background: Outcomes with CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisolone) or CHOP-like chemotherapy in peripheral T-cell lymphoma are poor. We investigated whether the regimen of gemcitabine, cisplatin, and methylprednisolone (GEM-P) was superior to CHOP as front-line therapy in previously untreated patients.

Methods: We did a phase 2, parallel-group, multicentre, open-label randomised trial in 47 hospitals: 46 in the UK and one in Australia.

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Background: Somatic v-Raf murine sarcoma viral oncogene homolog B (BRAF) mutation, present in approximately 10% of metastatic colorectal cancer (mCRC) cases, is associated with poor prognosis. Patient outcome outside of clinical trials has only been reported in small series. We report real-world data on treatment and survival for BRAF-mutated (MT) patients at a single tertiary center, compared with a matched BRAF wild type (WT) control group.

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We evaluated the outcomes for patients with peripheral T-cell lymphoma (PTCL) undergoing front-line chemotherapy at our institutions between 2002 and 2012. One hundred and fifty-six patients were eligible, comprising PTCL not otherwise specified (NOS) (n = 50, 32.0%), angioimmunoblastic T-cell lymphoma (AITL) (n = 44, 28.

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Germline polymorphisms may affect chemotherapy efficacy and toxicity. We examined the effect of polymorphisms in drug metabolism and DNA repair genes on pathologic response rates, survival, and toxicity for patients randomized to surgery alone or perioperative ECF chemotherapy in the MRC MAGIC trial. DNA was extracted from nontumor resection formalin-fixed paraffin-embedded (FFPE) blocks.

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Background: Limited data exist regarding the correlation between MRI tumour regression grade (mrTRG) and pathological TRG (pTRG) in rectal cancer.

Methods: mrTRG and pTRG were compared in rectal cancer patients from two phase II trials (EXPERT and EXPERT-C). The agreement between radiologist and pathologist was assessed with the weighted κ test while the Kaplan-Meier method was used to estimate survival outcomes.

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Background: There are over half a million women with a previous breast cancer diagnosis living in the UK. It is important to establish their level of unmet physical and psychosocial needs, as many are not routinely seen for follow-up under current models of care.

Methods: We conducted a retrospective analysis of early breast cancer survivors entering an Open Access Follow-Up (OAFU) programme in 2015.

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Importance: Mismatch repair (MMR) deficiency (MMRD) and microsatellite instability (MSI) are prognostic for survival in many cancers and for resistance to fluoropyrimidines in early colon cancer. However, the effect of MMRD and MSI in curatively resected gastric cancer treated with perioperative chemotherapy is unknown.

Objective: To examine the association among MMRD, MSI, and survival in patients with resectable gastroesophageal cancer randomized to surgery alone or perioperative epirubicin, cisplatin, and fluorouracil chemotherapy in the Medical Research Council Adjuvant Gastric Infusional Chemotherapy (MAGIC) trial.

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Survival for transformed follicular lymphoma (tFL) has improved in the rituximab era and the need for upfront stem cell transplantation (SCT) is unclear. We evaluated the outcomes for all patients treated with first-line chemotherapy for histologically-proven tFL at our institution from 2003-2013 (n = 87). The majority of patients (89.

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