Medulloblastoma (MB) is a brain malignancy, which commonly occurs in kids, but is rare in adults. histology was correlated with reduced survival. Our evaluation highlighted that both groupings had similar general survival time, however the prognostic elements were not similar, except radiotherapy that was connected with better survival. reported that kids and adults with MB usually do not differ with respect to overall survival, yet patients who are 3 years aged or less fare significantly worse [5]. However, Rose Lai suggested that the survival of children, especially older than 3 years of age, may be better than adults [6]. Furthermore, there has been no research that directly compare and evaluate the overall survival between children (4C19 years) with those of adults ( 20 years). In children, the sample size was adequate in determining the clinical prognostic factors that guideline the therapeutic strategies [7]; whereas in adults, the disease rarely occurred. The majority of reported survival rates and prognostic factors were based on single-institution comprising small series [8C11], or clinical studies that group together adult MB children MB, thus, the results may be inconclusive or may not permit a definite assessment of the prognostic role of clinical and pathologic factors to guide the therapy for adults. Previous studies suggested it is affordable to consider grouping adults with children in clinical trials for MB [5]. However, there have been debates as to whether adults have a similar therapeutic response with that of children, such as radiotherapy or extent of surgery. The Surveillance, Epidemiology and End Results (SEER) program of the National Cancer Institute (NCI) could provide us with sufficient amount of patients who are representative of the US populace, without selection biases. In this study, we aimed to determine whether adults and children with MB differ in survival, and to evaluate the prognostic factors or treatment efficacy in pediatric versus adult patients on a national level by using SEER database. RESULTS Patient characteristics A total of 965 MB worth of data on patients was analyzed in this study. Among these patients, 616 (63.8%) were children and 349 (36.2%) were adults. The median age was 8 years old for children and 31 years aged for adults. The estimated 2- 5- and 10-12 months overall survival for children were 85.6%, 75.5%, and 67.9%, respectively, and the corresponding estimates for adults were 84.9%, 74.2%, and 67.3% (Figure ?(Figure1).1). Epidemiological data showed that in the paediatric age group, MB occurred commonly during the first decade (38.5%) and in adults, the third decade (16.5%). The peak age of onset for MB patients was in those 9 years aged and younger, after which the frequency appears to show an exponential decrease with age (Figure ?(Figure22). Open in a separate window Figure 1 KaplanCMeier overall survival curves for children and adult patients with TL32711 inhibitor database MB Open in a separate window Figure 2 Patients distribution by age at diagnosis in 965 patients with MB, diagnosed from 1992 to 2013 The majority of patients are white (85.4%), and 61.5% of which are male. About 9.6% of histopathology was the desmoplastic nodular type, and 4.8% had the large cell /anaplastic variant. The gross total resection was decided for 59.0% patients, and over 80% of patients had radiotherapy. The majority of tumor (92.1%) located in infratentorial. About 11.7% of patients had spinal cord, cerebrospinal fluid (CSF), or extra neural metastases at the time of diagnosis. While comparing with adult MB patients, children MB patients were more likely to exhibit distal metastases (CSF, spinal cord or extra neural) (14.9% vs 6.0%), and slightly more often to be diagnosed in 2003C2013 (75.5% vs PRDI-BF1 69.3%). However, the characteristics and distribution of the two TL32711 inhibitor database groups showed no factor concerning sex, competition, histological type, tumor size, level of surgical procedure, radiotherapy, and site. An in depth report on the patients scientific features was provided in Desk ?Table11. Desk 1 Demographic, tumor, and treatment features worth 0.05), while age group at medical diagnosis, sex, competition, marital position, size, and principal site showed no significant association with survival ( 0.05). Desk 2 Univariate evaluation on the influence of individual, tumor and administration factors on general TL32711 inhibitor database survival value 0.05). Radiation utilization was considerably associated with decreased hazard of mortality (HR 0.41, 95% CI 0.28C0.60); whereas LC/A subtype (HR 2.31, 95%.