Publications by authors named "Marc Bollet"

Article Synopsis
  • The study aimed to compare patient preferences for administering pegfilgrastim, a medication used to prevent chemotherapy-induced neutropenia, via prefilled syringe versus pen device among cancer patients at the Rafael Institute in France.
  • In the trial involving 150 patients, results showed a significant preference for the pen device, with participants reporting lower pain levels and more positive emotions compared to the syringe, although satisfaction with nursing care was higher with the syringe.
  • Overall, the findings highlighted a stronger preference for using the pen device for administration, which can help shape clinical practices and enhance patient-centered care.
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Purpose: Treatment options for renal cell carcinoma (RCC) with inferior vena cava tumor thrombus (IVC-TT) are limited and carry substantial risks. Currently, there are no standard treatment options in the setting of recurrent or unresectable RCC with IVC-TT.

Methods: We report our experience of treating an IVC-TT RCC patient with stereotactic body radiation therapy (SBRT).

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Background: Neoadjuvant fluoropyrimidine (5FU or capecitabine)-based chemoradiotherapy (CRT) has been considered the standard of care for locally advanced rectal cancer (LARC). Whether addition of oxaliplatin (OXP) will further improve clinical outcomes is still unclear.

Methods: To identify clinical trials combining oxaliplatin in preoperative CRT or perioperative chemotherapy for LARC published until March 2021, we searched PubMed and the Cochrane Library.

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Gastric mucosa-associated lymphoid tissue (MALT) lymphoma is a rare disease which is often associated with () infection. First-line treatment of stage IE and IIE localized gastric MALT lymphoma is based on the eradication of . The presence of resistance factors such as translocation t (11;18), peri-gastric lymph node involvement and the degree of tumor infiltration of the gastric wall; or lack of response to antibiotic therapy are two main indications to treat with definitive radiotherapy (RT).

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Purpose: The study aims to assess the feasibility, safety, and tolerability of CareMin650, a new photobiomodulation device, in patients treated by radiotherapy (RT) and to collect preliminary data on efficacy for prevention and treatment of oral mucositis (OM) and radiation dermatitis (RD).

Methods: Safe PBM is a French, multicentric, prospective, non-comparative study which include patients with head and neck cancer (H&NC, cohort A) or breast cancer (BC, cohort B) treated in prophylactic (cohorts A1 and B1) or curative setting (cohort A2 and B2). Prophylactic treatment was administered from D1 to end of RT, at a dose of 3 J/cm.

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Article Synopsis
  • BRCA1 and BRCA2 gene mutations play a significant role in hereditary breast cancer and are increasingly important for determining eligibility for PARP inhibitor therapies.
  • Updated guidelines for BRCA testing are necessary due to the overlap of genetic testing with both preventive measures and treatment strategies for breast cancer patients.
  • An expert international group, including various healthcare professionals, developed recommendations to improve genetic counseling, update testing indications for therapy, and streamline the testing process for managing breast cancer effectively.
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Objective: The severity of breakthrough cancer pain (BTcP) impacts patients' quality of life, increases the risk of anxiety and depression, lowers functional capacities, and may lead to poor compliance with cancer treatments. The aim of the current study was to assess, in a real-life setting, patient satisfaction with a fentanyl-pectin-nasal-spray (FPNS) for BTcP management in head and neck (H&N) cancer patients treated by radiotherapy.

Materials And Methods: This non-interventional, prospective study was conducted in 92 adult H&N-cancer patients undergoing radiotherapy and who started FPNS treatment for BTcP.

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Background: In this prospective phase 2 trial, we assessed the efficacy of trastuzumab-emtansine (T-DM1) in HER2-negative metastatic breast cancer (MBC) patients with HER2-positive CTC.

Methods: Main inclusion criteria for screening were as follows: women with HER2-negative MBC treated with ≥ 2 prior lines of chemotherapy and measurable disease. CTC with a HER2/CEP17 ratio of ≥ 2.

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Purpose: The purpose of this study was to assess the feasibility, efficacy and toxicity of fiducial marker implantation and tracking in CyberKnife® stereotactic radiation therapy (SBRT) applied to extracranial locations.

Materials And Method: This is a retrospective, single-centre, observational study to collect the data of all patients treated by stereotactic radiation therapy with fiducial marker tracking at extracranial locations, conducted between June 2014 and November 2017. Information regarding the implantation procedure, the types of toxicity related to marker implantation and the number of markers implanted/tracked during treatment were collected.

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Article Synopsis
  • In the digital age, genetics cohorts have evolved from merely identifying disease causes to generating vast data for medical and commercial purposes, exemplified by companies like 23andMe.
  • French law currently restricts foreign genetic companies from operating in the country while preventing similar entities from being established domestically.
  • A proposed solution, called "e-CohortE," aims to create a French version of genetic cohorts that aligns with national healthcare needs without requiring legal changes.
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Objective: Our objective was to report our experience and to evaluate the feasibility and toxicity of focal salvage stereotactic body radiation therapy (SBRT) in patients with post-radiation local recurrence of prostate cancer.

Methods: We retrospectively reviewed medical records of patients treated with Cyberknife between October 2014 and April 2017 at our institution for a focal reirradiation delivered to the prostate/prostatic bed for local recurrence after radical or adjuvant radiotherapy. All patients underwent prostate biopsies at recurrence at the time of fiducial markers placement, had choline PET/CT and pelvic MRI.

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Purpose: Morbidity and mortality review (MMR) meetings in radiation therapy (RT) departments aim to monitor radiation-induced toxicities and identify potential factors that may be correlated with their development and severity, particularly treatment planning errors. The aims of the Prospective Registration of Morbidity and Mortality, Individual Radiosensitivity and Radiation Technique (PROUST) survey were to make an inventory of existing MMR procedures and to describe their procedures.

Methods And Materials: The link to the web-based questionnaire of the PROUST survey was sent to 351 radiation oncologists working at 172 centers.

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Context: Classic Kaposi sarcoma (KS), also known as Mediterranean KS, affects immunocompetent patients and is usually limited to the skin, without profound organ involvement. We report an exceptional case of a primary adrenal classic KS.

Case Description: A left adrenal incidentaloma was fortuitously discovered on a computed tomography scan performed for chest pain in a 60-year-old man.

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Forward thinking does not seek to predict the future, to unveil it as if it were already in existence, rather, its aim is to help us to construct it. Although today's epidemiological and therapeutic situations for urogenital tumours can evolve over the next 10 years, diagnostic and therapeutic methods, as well as the treatment and implementation of innovations, are already rapidly changing. Rather than reducing our prospective thinking to the therapeutic treatment of cancer only, we will aim at proposing a global sanitary vision that includes diagnosis, therapies, prevention, routine utilisation of technomedicine, genomics and even nanomedicine.

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Purpose: Recently, we developed radiosensitivity (RSI), a clinically validated molecular signature that estimates tumor radiosensitivity. In the present study, we tested whether integrating RSI with the molecular subtype refines the classification of local recurrence (LR) risk in breast cancer.

Methods And Materials: RSI and molecular subtype were evaluated in 343 patients treated with breast-conserving therapy that included whole-breast radiation therapy with or without a tumor bed boost (dose range 45-72 Gy).

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Several algorithms exist to perform quality assurance for volumetric-modulated arc therapy (VMAT) treatments based on electronic portal imaging devices (EPID). These algorithms are used to compare doses (convert into water, GLAaS) and fluences (in amorphous silicon (aSi), Varian portal dosimetry). The aim of this study is to compare the two methods using clinical data.

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The purpose of this multicenter prospective and descriptive study was to determine late toxicities and outcomes among patients with non-metastatic breast cancer receiving concurrent bevacizumab (BV) and radiation therapy (RT) in the clinical trials. Early and late toxicities were assessed and evaluation was available for 63 patients (pts) at 12 months. Acute radiation dermatitis was observed in 48 (76%): grade 1 for 27, grade 2 for 17 and grade 3 for 4 pts.

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BRCA2 is the major high-penetrance predisposition gene for luminal (estrogen receptor [ER] positive) breast cancers. However, many BRCA2 mutant carriers lack family history of breast/ovarian cancers and do not benefit from genetic testing. Specific genomic features associated with BRCA2 inactivation in tumors could help identify patients for whom a genetic test for BRCA2 may be proposed.

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Background: Molecular signatures may become of use in clinical practice to assess the prognosis of breast cancers. However, although international consensus conferences sustain the use of these new markers in the near future, concerns remain about their degree of discordance and cost-effectiveness in different international settings. The present study aims to validate Ki67 as prognostic factor in a large cohort of early-stage (pT1-pT2, pN0) breast cancer patients.

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Infiltrating lobular cancer is known for its diffuse growth pattern and difficult radiological visualization. Based on this review, infiltrating lobular cancer patients do not have a higher local recurrence risk after breast conserving therapy. Lobular histology should also be considered as a separate prognostic factor in favour of referral for radiotherapy after mastectomy.

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BRCA1 inactivation is a frequent event in basal-like breast carcinomas (BLC). However, BRCA1 can be inactivated by multiple mechanisms and determining its status is not a trivial issue. As an alternate approach, we profiled 65 BLC cases using single-nucleotide polymorphism arrays to define a signature of BRCA1-associated genomic instability.

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Aim: To retrospectively assess the acute and long-term toxicity using aromatase inhibitors (AI) therapy concurrently with hypofractionated radiotherapy (HFRT) in breast cancer patients.

Methods: From November 1999 to October 2007, 66 patients were treated with breast HFRT and concurrent AI. In 63 patients (95.

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Purpose: The lack of pathologic breast cancer response to neoadjuvant chemotherapy (NCT), a negative prognostic factor, has prompted the addition of chemotherapy to adjuvant radiotherapy. This study aims to investigate prospectively the toxicities of adjuvant concurrent chemoradiotherapy versus radiotherapy alone.

Patients And Methods: Two groups of patients treated for breast cancer between 1997 and 2002 by NCT, surgery, and radiotherapy with or without concurrent chemotherapy, were matched on age, body mass index (BMI), treatment period, treated side, and surgery type.

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Background: Genomic grade (GG) is a 97-gene signature which improves the accuracy and prognostic value of histological grade (HG) in invasive breast carcinoma. Since most of the genes included in the GG are involved in cell proliferation, we performed a retrospective study to compare the prognostic value of GG, Mitotic Index and Ki67 score.

Methods: A series of 163 consecutive breast cancers was retained (pT1-2, pN0, pM0, 10-yr follow-up).

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Purpose: A gene expression signature, predictive for local recurrence after breast-conserving treatment, has previously been identified from a series of 165 young patients with breast cancer. We evaluated this signature on both another platform and an independent series, compared its performance with other published gene-sets, and investigated the gene expression profile of a larger data set.

Experimental Design: Gene expression tumor profiles were obtained on 148 of the initial 165 Dutch patients and on an independent validation series of 195 French patients.

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