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Published in: BMC Surgery 1/2021

Open Access 01-12-2021 | Glioblastoma | Research

A nomogram for individualized prediction of overall survival in patients with newly diagnosed glioblastoma: a real-world retrospective cohort study

Authors: Nijiati Kudulaiti, Zhirui Zhou, Chen Luo, Jie Zhang, Fengping Zhu, Jinsong Wu

Published in: BMC Surgery | Issue 1/2021

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Abstract

Background

This study aimed to identify the most valuable predictors of prognosis in glioblastoma (GBM) patients and develop and validate a nomogram to estimate individualized survival probability.

Methods

We conducted a real-world retrospective cohort study of 987 GBM patients diagnosed between September 2010 and December 2018. Computer generated random numbers were used to assign patients into a training cohort (694 patients) and internal validation cohort (293 patients). A least absolute shrinkage and selection operator (LASSO)-Cox model was used to select candidate variables for the prediction model. Cox proportional hazards regression was used to estimate overall survival. Models were internally validated using the bootstrap method and generated individualized predicted survival probabilities at 6, 12, and 24 months, which were compared with actual survival.

Results

The final nomogram was developed using the Cox proportional hazards model, which was the model with best fit and calibration. Gender, age at surgery, extent of tumor resection, radiotherapy, chemotherapy, and IDH1 mutation status were used as variables. The concordance indices for 6-, 12-, 18-, and 24-month survival probabilities were 0.776, 0.677, 0.643, and 0.629 in the training set, and 0.725, 0.695, 0.652, and 0.634 in the validation set, respectively.

Conclusions

Our nomogram that assesses individualized survival probabilities (6-, 12-, and 24-month) in newly diagnosed GBM patients can assist healthcare providers in optimizing treatment and counseling patients.
Trial registration: retrospectively registered.
Literature
34.
go back to reference Perkins A, Liu G. Primary brain tumors in adults: diagnosis and treatment. Am Fam Physician. 2016;93:211–7.PubMed Perkins A, Liu G. Primary brain tumors in adults: diagnosis and treatment. Am Fam Physician. 2016;93:211–7.PubMed
Metadata
Title
A nomogram for individualized prediction of overall survival in patients with newly diagnosed glioblastoma: a real-world retrospective cohort study
Authors
Nijiati Kudulaiti
Zhirui Zhou
Chen Luo
Jie Zhang
Fengping Zhu
Jinsong Wu
Publication date
01-12-2021
Publisher
BioMed Central
Published in
BMC Surgery / Issue 1/2021
Electronic ISSN: 1471-2482
DOI
https://doi.org/10.1186/s12893-021-01233-z

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