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Purpose: Infant and young childhood medulloblastoma (iMB) is usually treated without craniospinal irradiation (CSI) to avoid neurocognitive late effects. Unfortunately, many children relapse. The purpose of this study was to assess salvage strategies and prognostic features of patients with iMB who relapse after CSI-sparing therapy., Methods: We assembled a large international cohort of 380 patients with relapsed iMB, age younger than 6 years, and initially treated without CSI. Univariable and multivariable Cox models of postrelapse survival (PRS) were conducted for those treated with curative intent using propensity score analyses to account for confounding factors., Results: The 3-year PRS, for 294 patients treated with curative intent, was 52.4% (95% CI, 46.4 to 58.3) with a median time to relapse from diagnosis of 11 months. Molecular subgrouping was available for 150 patients treated with curative intent, and 3-year PRS for sonic hedgehog (SHH), group 4, and group 3 were 60%, 84%, and 18% ( P = .0187), respectively. In multivariable analysis, localized relapse ( P = .0073), SHH molecular subgroup ( P = .0103), CSI use after relapse ( P = .0161), and age ≥ 36 months at initial diagnosis ( P = .0494) were associated with improved survival. Most patients (73%) received salvage CSI, and although salvage chemotherapy was not significant in multivariable analysis, its use might be beneficial for a subset of children receiving salvage CSI < 35 Gy ( P = .007)., Conclusion: A substantial proportion of patients with relapsed iMB are salvaged after initial CSI-sparing approaches. Patients with SHH subgroup, localized relapse, older age at initial diagnosis, and those receiving salvage CSI show improved PRS. Future prospective studies should investigate optimal CSI doses and the role of salvage chemotherapy in this population., Competing Interests: Craig ErkerConsulting or Advisory Role: Novartis Canada Pharmaceuticals Inc Martin MynarekEmployment: Novartis, BioNTech SE Maura MassiminoConsulting or Advisory Role: Oncoscience, Novartis Juliette HukinStock and Other Ownership Interests: AbbVieConsulting or Advisory Role: AstraZeneca, Novartis Vijay RamaswamyHonoraria: AstraZenecaConsulting or Advisory Role: AstraZeneca Canada Alvaro LassalettaStock and Other Ownership Interests: Gilead SciencesConsulting or Advisory Role: Jazz Pharmaceuticals, Servier, Alexion Pharmaceuticals Sébastien PerreaultLeadership: BayerStock and Other Ownership Interests: NovocureHonoraria: BayerConsulting or Advisory Role: BayerSpeakers' Bureau: BayerExpert Testimony: Bayer Cassie N. KlineResearch Funding: Regeneron (Inst), Curis (Inst), Midatech Pharma (Inst), Ipsen (Inst), Day One Therapeutics (Inst), Bristol Myers Squibb (Inst), Kazia Therapeutics (Inst), Chimerix (Inst) Eric S. SandlerConsulting or Advisory Role: Protara Therapeutics Lindsey M. HoffmanHonoraria: AstraZeneca Kathleen DorrisStock and Other Ownership Interests: Amgen, Gilead SciencesConsulting or Advisory Role: Day One Biopharmaceuticals Helen ToledanoConsulting or Advisory Role: AstraZeneca, Novartis Derek S. TsangTravel, Accommodations, Expenses: Mevion Medical Systems Jeffrey KnipsteinEmployment: PRA Health Sciences, ServierConsulting or Advisory Role: Atheneum Zhihong J. WangHonoraria: AstraZenecaConsulting or Advisory Role: AstraZenecaSpeakers' Bureau: AstraZeneca Kenneth J. CohenConsulting or Advisory Role: Novartis, Bristol Myers Squibb, DNAtrixResearch Funding: Novartis, Bristol Myers Squibb Jordan R. HansfordStock and Other Ownership Interests: AnteotechConsulting or Advisory Role: Bayer Sabine MuellerResearch Funding: Regeneron (Inst), DayOne Pharmaceuticals (Inst), Curis Pharamceuticals (Inst), Curis Pharamceuticals (Inst), Bristol Myers Squibb (Inst) Amar GajjarConsulting or Advisory Role: Roche/Genentech, QED Therapeutics, Day One Therapeutics, Geanno BioResearch Funding: Genentech (Inst), Kazia Therapeutics (Inst) Stefan RutkowskiConsulting or Advisory Role: Bristol Myers Squibb GmbH & Co. KGaA, Germany, Celgene, Roche Pharma AG, Grenzach-Wyhlen, Bayer Germany Giles RobinsonResearch Funding: Novartis (Inst), Genentech/Roche (Inst), Novartis (Inst), SpringWorks Therapeutics (Inst) Eric BouffetConsulting or Advisory Role: NovartisResearch Funding: Roche (Inst) Lucie Lafay-CousinHonoraria: Servier, Innomar StrategiesNo other potential conflicts of interest were reported.

Medical cannabis (MC) may offer therapeutic benefits for children with complex neurological conditions and chronic diseases. In Canada, parents, and caregivers frequently report encountering barriers when accessing MC for their children. These include negative preconceived notions about risks and benefits, challenges connecting with a knowledgeable healthcare provider (HCP), the high cost of MC products, and navigating MC product shortages. In this manuscript, we explore several of these barriers and provide recommendations to decision-makers to enable a family-centered and evidence-based approach to MC medicine and research for children., Competing Interests: RJH and LEK served on Health Canada’s Scientific Advisory Committee on Health Products Containing Cannabis whose views are not reflected in this manuscript. RJH received a grant from the Jim Pattison Children’s Hospital Foundation for a study on medical cannabis in childhood refractory epilepsy and was Co-Chair, Health Canada Scientific Advisory Committee on Health Products Containing Cannabis (an unpaid position). EL received speaking fees from Spectrum Therapeutics and holds leadership positions in the following groups: Jamaican Medical Cannabis Corporation (unpaid position), Medical Cannabis Clinicians Society (UK), Canadian Collaborative for Childhood Cannabinoid Therapeutics, MedCan Support and Canadian Patient Advocacy & Support Services. CM-H is the controlling shareholder of a small publicly traded company that made an incremental $1.7M investment in a biotechnology company involved in medical research related to minor cannabinoids. JA has participated in an advisory board for Zyus Life Science. REB is a member of the Advisory Council, Drug-Free Kids Canada, and was Co-Chair of the Cannabis Project Advisory Group, Canadian Paediatric Society (both unpaid positions). SC holds a leadership position on the Network of Networks (N2) Board of Directors. AG reports that this article was researched and written prior to her employment at Health Canada and any views, opinions, and recommendations expressed within are those of the authors and do not reflect the position of Health Canada and/or the Government of Canada. JJ received grants from NSERC, CIHR, AMA Pediatrics, and Alberta Children’s Hospital Foundation, consulting fees from EISAI, UCB, and PENDOPHARM, payment/honoraria from EISAI, UCB, PENDOPHARM, and SUNOVION, and travel reimbursement from Neurocrine. JJ also holds leadership positions in the American Epilepsy Society, the Canadian League Against Epilepsy, and Hope for Hypothalamic Hamartomas. MJR is a member of the Paediatrics & Child Health editorial board. Another editor was responsible for overseeing the peer review of this manuscript. AS is the founder of Shackelford Pharma., an emerging medical cannabis company. There is also a provisional patent application filed, but not yet issued, on behalf of Shackelford Pharma, Inc. RV was director of the Department of Pediatric Pharmacy, Children’s Hospital of Eastern Ontario when this manuscript was written and submitted for publication but is now Vice President of Pharmacy Affairs for BCE Pharma. He has received consulting fees from Harvest Medicine Clinic and recently concluded an 8-year term as a Director of the International Pharmaceutical Federation Foundation. LEK holds a Board of Directors position at the Canadian Consortium for the Investigation of Cannabinoids and holds funding from the Canadian Institutes of Health Research, the Canadian Cancer Society, and the SickKids Foundation for C4T. She holds a Mitacs Accelerate grant for a separate project in partnership with Canopy Growth. There are no other disclosures., (© The Author(s) 2023. Published by Oxford University Press on behalf of the Canadian Paediatric Society.)

Objective: To explore the health literacy of children diagnosed with Acute Lymphoblastic Leukemia (ALL) through their knowledge of their medications., Methods: Within the Basic Interpretive approach to qualitative research, semi-structured interviews were conducted with children from ages 6 to18 years (n=16) between May and September 2009 to determine their knowledge of medication properties, medication habits and medication teaching. REB approval was obtained., Results: The younger children (mean age 7.5 years) correctly answered, on average, 51% of the questions on colour, 26% of the questions on name, 25% of the questions on frequency, and 8% of the questions on the purposes of their medications. The older children (mean age 16 years) scored at least 35% higher for each characteristic. All of the younger children reported that physicians consistently directed medication education to parents only, and that the younger children were rarely present during these sessions. 13 of the 16 children stated that they want to learn more about and be more involved in education sessions addressing their medications., Conclusions: Children with ALL at the IWK Health Centre do not have a good knowledge of their medications, however most children expressed that they want to know more about their medications.