Adjuvant Therapy for Residual Disease in Children With Medulloblastoma

Author(s):  
H. J. G. Bloom
2020 ◽  
Vol 38 (6_suppl) ◽  
pp. TPS600-TPS600 ◽  
Author(s):  
Sumanta K. Pal ◽  
Siamak Daneshmand ◽  
Surena F. Matin ◽  
Yohann Loriot ◽  
Srikala S. Sridhar ◽  
...  

TPS600 Background: Radical surgery ± cisplatin‐based (neo)adjuvant therapy (NAT) is the mainstay of treatment for invasive urothelial carcinoma of the upper urinary tract (UTUC) or bladder (UBC), but recurrence rates are high. Furthermore, many patients (pts) are unable to receive NAT because of cisplatin ineligibility. Fibroblast growth factor receptor 3 (FGFR3) genetic alterations occur in up to 70% of UTUC and up to 20% of UBC, and may constitute a potential candidate for targeted therapy. Infigratinib (BGJ398), a selective FGFR1–3 inhibitor, has shown promising clinical activity and tolerability in pts with advanced urothelial carcinoma having FGFR3 alterations [Pal et al. Cancer Discov 2018]. PROOF 302 has been designed to investigate the efficacy and safety of infigratinib versus placebo as adjuvant therapy in pts with high-risk invasive urothelial carcinoma and FGFR3 alterations. Methods: PROOF 302 is a randomized, double-blind, placebo-controlled, phase III study of approx. 218 pts. Adults with high-risk invasive UTUC or UBC with FGFR3 genetic alterations (i.e. mutations, gene fusions or translocations) who are ≤120 days following surgical resection and ineligible for cisplatin-based adjuvant chemotherapy or with residual disease after cisplatin- based NAT are eligible. Those who received non cisplatin-based NAT are eligible if they have residual disease and are ineligible for adjuvant cisplatin. Pts receive oral infigratinib 125 mg or placebo (1:1 ratio) once daily on days 1–21 every 28 days for up to 52 weeks or until disease recurrence, unacceptable toxicity or death. Primary endpoint: centrally reviewed disease-free survival (DFS). Secondary endpoints: DFS including intraluminal low-risk recurrence; metastasis-free survival; overall survival; DFS (per investigator); safety and tolerability. Exploratory endpoints include: quality of life; pharmacokinetics; cell-free DNA (cfDNA) and/or RNA for resistance mechanisms. The study will involve approximately 120 centers worldwide. Enrollment is expected to begin in January 2020. Trial registration: EudraCT 2019-003248-63. Clinical trial information: EudraCT 2019-003248-63.


2021 ◽  
Vol 50 (1) ◽  
pp. 88
Author(s):  
Elena Provenzano

<p>This review focuses on neoadjuvant chemotherapy for breast cancer which introduces practical issues for pathologists, including predicting response, optimising specimen handling, size measurement and assessment of residual disease, and recent advances in management of the axilla. The role of neoadjuvant chemotherapy in breast cancer is increasing, and it has become standard of care for high risk Human Epidermal Growth Factor Receptor 2 positive and triple negative breast cancers. The benefits of the neoadjuvant approach extend beyond pathological complete response to tumour downstaging permitting conservative surgi- cal options in the breast and axilla, and assessment of response provides valuable prognostic information to enable escalation and de-escalation of adjuvant therapy to optimise oncological outcomes. Hence histopathologists play a vital role in patient management in the neoadjuvant setting. Optimal patient selection for neoadjuvant chemotherapy requires consideration of pre- treatment histopathological and molecular tumour characteristics. Post chemotherapy, tumour staging can be challenging, and changes in criteria for measurement of primary tumour and metastases in the 7th and 8th editions of the TNM have led to confu- sion amongst pathologists. This review offers practical guidance on specimen handling and measurement of lesion size. Mov- ing forwards more detailed information on degree of response will be required for adjuvant therapy decision making, and the Residual Cancer Burden is emerging as the preferred method for quantifying residual disease not just within clinical trials but in routine practice. Recent advances in management of the axilla are discussed, including the significance of minimal residual disease in the form of isolated tumour cells and micrometastases which portend a worse prognosis in the neoadjuvant setting.</p><p><strong>Conclusion</strong>. Neoadjuvant chemotherapy now forms part of routine breast cancer management, and detailed histopathological assessment and an understanding of the importance of molecular tumour biology is essential for clinical decision making.</p>


2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 4127-4127 ◽  
Author(s):  
T. R. Halfdanarson ◽  
F. Quevedo ◽  
R. R. McWilliams

4127 Background: Small bowel adenocarcinoma (SBA) is a rare tumor accounting for less than 2% of all GI tumors. The prognosis of advanced disease is poor. Benefits of adjuvant therapy following complete resection are uncertain. Methods: We retrospectively reviewed the records of 491 pts with primary SBA diagnosed at the Mayo Clinic from 1970–2005. Patients with ampullary and periampullary tumors were excluded. Results: 303 pts (62%) were male and the median age was 62 years. 280 (57%) of the tumors were located in the duodenum, 143 (29%) in the jejunum, 48 (10%) in the ileum and in 20 (9%) the location was not specified. Abdominal pain was the most common principal symptom occurring in 203 pts (43%), followed by anemia/GI bleeding in 104 pts (22%) and nausea/vomiting in 76 pts (16%). The most common histologic grading was 3, occurring in 224 pts (45%). 79 pts (16%) grade 4, 170 pts (35%) grade 2, with 7 (1.4%) grade 1. The TNM staging was as follows: 0: 3 (0.6%), I: 36 (7.3%), II: 133 (27.1%), III: 137 (27.9) and IV: 163 (33.2). In 18 pts (3.7%), data were insufficient for staging. The median survival for the entire cohort was 20.7 months, with 5 and 10 year survival 26% and 19% respectively. Increasing age (p < 0.0001), male sex (p = 0.026), advanced stage (p < 0.0001), grade 4 tumors (p = 0.005) and residual disease after surgery (p < 0.0001) were independently associated with shortened survival in a multivariate analysis. Neither adjuvant chemoradiation (n = 40) nor 5-FU based chemotherapy (n = 33) improved overall survival after complete resection, even after adjusting for age, sex, location, lymph node status and grade (RR 1.17, p = 0.45). This remained true for the subset of patients with resected duodenal tumors as well (RR 1.06, p = 0.83). The use of chemotherapy was associated with prolonged survival in patients with metastatic disease. The median survival and 1-year survival was 15.3 mos vs. 3.1 mos and 59% vs. 5.9% respectively (p < 0.0001), in this highly selected group. Conclusion: SBA is a rare tumor with a relatively poor prognosis. Complete resection of all disease offers the only chance of cure. The benefits of adjuvant therapy remain unknown, but chemotherapy in the metastatic setting may provide survival benefit. No significant financial relationships to disclose.


2010 ◽  
Vol 28 (15_suppl) ◽  
pp. e15513-e15513
Author(s):  
L. Tait ◽  
M. D. Hasselle ◽  
A. Meriwether ◽  
K. Wroblewski ◽  
S. D. Yamada ◽  
...  

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