Publications by authors named "Amant F"

Although chemotherapy is integrated in the treatment of second-trimester pregnant cancer patients, its potential cyto- and genotoxicity to fetal tissue remains unknown. To investigate any causal relation between in utero chemotherapy exposure and fetal toxicity, late-gestation pregnant BL6 mice were exposed to vehicle, or one of six chemotherapeutic compounds, used to treat pregnant cases: cyclophosphamide, carboplatin, cisplatin (alkylating agents), epirubicin, doxorubicin (anthracyclines) or paclitaxel (taxane). fetuses were euthanized at gestational day 18.

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Background: Platina and taxanes are frequently used chemotherapeutic agents to treat cancer, also when diagnosed during pregnancy. This report presents an interim analysis of the largest series of children prenatally exposed to platinum and/or taxane agents and aims to determine their physical health and neurocognitive outcomes.

Methods: As part of a multicentre, prospective cohort study (ClinicalTrials.

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Objectives: The primary aim of this study was to assess differences in melanoma recurrence between patients conceiving spontaneously versus those undergoing assisted reproductive technology (ART) and to determine use of ART in post-melanoma patients. A secondary aim was to describe the use of immunotherapy as a novel treatment regimen for metastatic melanoma in a cohort of fertile patients.

Design: This study is a 30-year analysis including data from a single-center questionnaire and a retrospective cohort study.

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Objective: We assessed reproductive, obstetrical, and oncological outcomes in patients who underwent fertility-sparing treatment by including studies that adhere to the FIGO 2018 staging system.

Methods: Data on recurrence, mortality, pregnancy rate, live birth rate, and preterm delivery rate were collected.

Results: In patients with stages IA1, IA2, and IB1, the recurrence rate was 4.

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Background: Precise preoperative risk classification of endometrial cancer is crucial for treatment decisions. Existing clinical markers often fail to accurately predict lymph node metastasis and recurrence risk. Loss of vimentin expression has emerged as a potential marker for predicting recurrence in low-risk endometrial cancer patients.

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Background: The phase II PRIMMO trial investigated a pembrolizumab-based regimen in patients with recurrent and/or metastatic cervical (CC) or endometrial (EC) carcinoma who had at least one prior line of systemic therapy. Here, exploratory studies of the gut microbiome (GM) are presented.

Methods: The microbial composition of 77 longitudinal fecal samples obtained from 35 patients (CC, n = 15; EC, n = 20) was characterized using 16S rRNA gene sequencing.

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Article Synopsis
  • Known genetic risk factors account for about one-third of familial endometrial cancer cases, but the link between rare germline copy number variants (CNVs) and cancer risk is not well understood.
  • A study analyzed DNA from over 4,000 endometrial cancer patients and nearly 18,000 controls, finding that the cancer group had a significantly higher number of CNVs.
  • The research identified 141 gene loci potentially related to endometrial cancer risk, highlighting a specific area (16p11.2) with recurrent deletions that could help further investigations into genetic susceptibility.
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Cyclophosphamide, daunorubicin, epirubicin, doxorubicin and paclitaxel are commonly used drugs in cancer treatment. However, there are no methods available enabling simultaneous measurement of these compounds and their metabolites in human plasma. Our aim was to develop and validate a sensitive method for simultaneous quantification of multiple antineoplastic drugs and their major metabolites in plasma.

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Objective: There are no data, and thus no consensus, on the optimal duration of poly(ADP-ribose) polymerase (PARP) inhibitor maintenance therapy for exceptional responders (here defined as progression-free for 5 years or longer) with platinum sensitive recurrent ovarian cancer. The current licence is to continue PARP inhibitors until progression or toxicity; however, international practice varies considerably. The risks of late progression and late-onset myeloid malignancies, defined as occurring beyond 5 years of PARP inhibition, are unknown.

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Background: Genomic profiling-based model (GP-M) is the gold-standard for endometrial cancer (EC) molecular classification, but several issues related to the availability of genomic sequencing in low-income settings remain and health disparities in the management are increasing. This study aims to investigate the non-inferiority of the immunohistochemistry-alone model in classifying ECs compared to the standard genomic profiling-based model in terms of oncologic outcomes.

Methods: All preoperative uterine-confined ECs undergoing surgical staging were retrospectively included.

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Background: Incidentally, the non-invasive prenatal test (NIPT) shows chromosomal aberrations suspicious of a maternal malignancy, especially after genome-wide testing. The aim of this study is to determine how many cases of cancer in pregnancy are diagnosed or missed with NIPT and whether in retrospect subtle changes in NIPT results could have detected cancer.

Methods: We identified Dutch patients diagnosed in 2017-2021 with pregnancy-associated cancer from the International Network on Cancer, Infertility and Pregnancy (INCIP) Registry, who underwent NIPT in the Dutch NIPT implementation study (TRIDENT-2).

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Prenatal exposure to toxins can adversely affect long-term health outcomes of the offspring. Though chemotherapeutics are now standard of care for treating cancer patients during pregnancy, certain compounds are known to cross the placenta and harm placental tissue. The consequences for the fetus are largely unexplored.

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Article Synopsis
  • Circulating cell-free DNA (cfDNA) is being studied as a noninvasive marker for cancer detection, and understanding its origins could enhance cancer diagnosis and treatment management.* -
  • The researchers created MetDecode, a deconvolution algorithm that identifies cancer tissue origins using DNA methylation patterns, and built a reference atlas from existing data for various cancers.* -
  • MetDecode showed high accuracy, correctly identifying tissue origins in 84.2% of plasma cfDNA samples from cancer patients, and can be accessed online for further use.*
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  • A descriptive study aimed to analyze pregnant women with cancer who died during pregnancy, delivery, or within the first year postpartum, using data from the International Network on Cancer, Infertility and Pregnancy (INCIP) registry.
  • Out of 2,359 registered women, 131 (5.6%) experienced maternal mortality, with lung, gastro-oesophageal cancer, and acute leukaemia showing the highest mortality rates.
  • The findings indicated that maternal mortality was linked to fewer live births, more elective caesarean sections, and earlier deliveries, resulting in an increased incidence of preterm births.
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Introduction: High-grade serous ovarian cancer (HGSOC) is characterized by high mortality and prevalent recurrences. This study investigates the prognostic value of phosphoglycerate dehydrogenase (PHGDH) in HGSOC which has been linked to metabolic reprogramming and recurrences in other cancers.

Methods: Data from 306 patients with advanced-stage HGSOC treated between 2008 and 2015 were analyzed.

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Article Synopsis
  • Non-invasive prenatal testing (NIPT), developed to screen for fetal trisomies, has been shown to incidentally detect hidden maternal cancers through analysis of cell-free DNA (cfDNA) in maternal blood.
  • The likelihood of identifying maternal cancers using NIPT varies based on the type of tumor and the specific technologies used in NIPT, as well as the follow-up diagnostic methods.
  • Given the impact of discovering maternal cancer during pregnancy on both the mother and the fetus, further prospective studies are necessary to establish effective clinical practices and improve patient outcomes.
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Objective: Treatment of advanced-stage ovarian cancer contains cytoreductive surgery (CRS) and chemotherapy. Achieving successful CRS (≤ 1 cm residual disease) is prognostically important, but may not be feasible peri-operatively while still risking complications. Therefore, patients' treatment expectations are important to discuss.

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Purpose: We investigated time to pregnancy, efficacy and safety of fertility preservation, and assisted reproductive technologies (ARTs) in women with early hormone receptor-positive breast cancer (BC) desiring future pregnancy.

Patients And Methods: POSITIVE is an international, single-arm, prospective trial, in which 518 women temporarily interrupted adjuvant endocrine therapy to attempt pregnancy. We evaluated menstruation recovery and factors associated with time to pregnancy and investigated if ART use was associated with achieving pregnancy.

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Objective: This study aimed to evaluate fulvestrant efficacy in women with estrogen receptor-positive low-grade gynecological cancers. The primary objective was to determine the response rate. Secondary objectives were progression-free survival, clinical benefit, duration of response, safety, tolerability, and quality of life.

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Background: Current treatment options for patients with locally advanced vulvar cancer are limited and associated with high morbidity. Therefore, it is important to develop new and safe treatment strategies for this vulnerable patient group.

Primary Objective: To compare the efficacy and safety of neoadjuvant chemotherapy followed by surgery with definitive chemoradiation in patients with locally advanced vulvar cancer.

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Article Synopsis
  • - Uterine leiomyosarcomas (uLMS) are aggressive cancers that don't respond well to immune checkpoint blockade (ICB), and research indicates that issues with the PI3K/mTOR signaling pathway may contribute to this resistance.
  • - A detailed analysis of 101 uLMS cases showed that over-activation of PI3K/mTOR is linked to immune evasion, with changes in the tumor microenvironment that limit immune responses.
  • - By inhibiting the PI3K/mTOR pathway, researchers were able to change the tumor microenvironment, enhance anti-tumor immune responses, and improve the effectiveness of PD-1 blockade therapy, leading to better treatment outcomes in preclinical models.
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  • The study investigates the long-term effects of radiotherapy during pregnancy on the neurocognitive, psychosocial, and physical development of children born to mothers who received such treatment.
  • A total of 68 maternal cases were identified, leading to 61 live births, and ultimately 43 children born to 42 mothers completed the follow-up study.
  • The research utilizes various assessments at specified ages, comparing outcomes to normative data while analyzing the impact of factors like fetal radiation dose and timing of treatment.
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