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MicroRNAs are small non-coding RNAs involved in the post-transcriptional regulation of genes and, consequently, of intracellular signalling pathways that govern cellular behaviour (Komatsu et al., 2023). They are widely implicated in oncogenesis, and in particular in mechanisms promoting cell migration, invasion and proliferation (Romano et al., 2021). Several preliminary studies have shown that serum levels of pro-oncogenic microRNAs correlate with tumor rates in gliomas (Jones et al., 2021; Levallet et al., 2022; Morokoff et al., 2020). Morokoff's study showed encouraging but insufficient results on the possibility of using microRNAs to differentiate radionecrosis...
With around 3,400 cases per year in France, diffuse gliomas are the most common primary tumours of the central nervous system. Their grade varies from 2 to 4. Whatever the grade, their prognosis is poor, because tumour recurrence is systematic, because no personalised medicine is available for the treatment of these cancers, and because the tools for monitoring recurrence are imperfect. Treatment of diffuse gliomas is based on removal of as much of the tumour as possible, whatever its grade. Surgery is followed by radiotherapy and chemotherapy depending on the grade and quality of the excision. In the event of recurrence, the patient may be offered second-line chemotherapy or...
This registry aims to collect clinical, molecular and radiologic data including detailed clinical parameters, molecular pathology (1p/19q co-deletion, MGMT methylation, IDH and TERTp mutations, etc) and conventional/advanced/new MR sequences (T1, T1c, T2, FLAIR, ADC, DTI, PWI, etc) of patients with primary gliomas. By leveraging artificial intelligence, this registry will seek to construct and refine algorithms that able to predict molecular pathology or subgroups of gliomas.
This registry aims to collect clinical, molecular and radiologic data including detailed survival data, clinical parameters, molecular pathology (1p/19q codeletion, MGMT methylation, IDH and TERTp mutations, etc) and conventional/advanced/new MR sequences (T1, T1c, T2, FLAIR, ADC, DTI, PWI, etc) of patients with primary gliomas. By leveraging artificial intelligence, this registry will seek to construct and refine algorithms that able to predict patients' survivals in the frame of molecular pathology or subgroups of gliomas.
In spinal cord tumors requiring surgical intervention, the resection difficulty is determined by two significant factors: tumor stiffness and adhesion to surrounding tissue. The stiffness of the tumor dictates the complexity of removal, while strong adhesion presents additional challenges during the surgical procedure. This clinical trial aims to assess the clinical utility of magnetic resonance elastography (MRE), in evaluating the stiffness and adhesion of spinal cord tumors and guiding surgical planning to selecting the most appropriate surgical approach for patients with spinal cord tumors.
This trial uses magnetic resonance elastography (MRE) to estimate tissue stiffness (hardness or softness of the tissue) in tissue that is affected by radiation treatment (radiation necrosis) and tumor tissue that has come back (recurrent) after treatment in patients with gliomas. Diagnostic procedures, such as MRE, may estimate the differences in tissue stiffness between radiation necrosis and recurrent glioma post treatment and ultimately lead to a more accurate diagnosis and/or surgery, and/or a better assessment of the disease's response to treatment.
MR Fingerprinting (MRF) will be performed in patients who will be treated with Gamma Knife radio surgery for a vestibular schwannoma before the intervention. Fifty patients will be included with a vestibular schwannoma of minimum 1cm in size. During follow-up, response of the tumor to radiosurgery will be evaluated for each patient with MRI. The aim of the study is to find patterns of vestibular schwannomas in MRF data which correlate with the type of response to radio surgery, i.e. tumor control after radiosurgery, further tumor growth despite radiosurgery, cystic transformation after radiosurgery.
Brain metastases are a source of much morbidity and mortality in adults with primary solid malignant tumors. With improvements in systemic therapy that prolong survival but have limited central nervous system penetration, patients with brain metastases are at increasing risk of developing and experiencing long-term side effects from treatment of brain metastases. The overarching goal of this study is to better understand the determinants of RT-associated changes in white and gray matter function and associated neurocognitive decline.
Gliomas are the most common primary brain tumor. Gliomas with different grades have different clinical behaviors that determine treatment planning and patient prognosis in clinical practice. In the 2021 World Health Organization (WHO) classification of tumors for the central nervous system, glioma genotyping was considered the most relevant information for neuroradiologists. The isocitrate dehydrogenase (IDH) genotype and 1p/19q codeletion status are two essential molecular markers that divide glioma into three groups: IDH wild-type, IDH mutant with 1p/19q non-codeletion, and IDH mutant with 1p/19q codeletion. MRI contrast clearance analysis (CCA) is based on T1 delayed-contrast...
The purpose of this study is to test whether an additional magnetic resonance image (MRI) sequence can improve the ability to distinguish radiation damage from tumor recurrence in participants with brain metastasis who have previously been treated with stereotactic radiosurgery (SRS).
