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Table 1 Overview of included studies

From: Mass spectrometry-based proteomics of cerebrospinal fluid in pediatric central nervous system malignancies: a systematic review with meta-analysis of individual patient data

Study, design, year

Malignancy

Research aim

Cohort

Guo et al.

Comparative study 2019

CNS B-ALL

CSF-proteome when affected by CNS infiltration of B-ALL

B-ALL (n = 6, CNS positive on “examination”)

Healthy controls (n = 6)

Trueworthy et al.

Comparative study (poster presentation) 2006

CNS B-ALL

CSF-proteome when affected by CNS infiltration of B-ALL

(1) two subgroups of morphologically negative CSF samples on PCR technique of centrifuged cell lysates:

First subgroup: MRD negative (n = 3)

Second subgroup: MRD positive (n = 3), and

(2) morphologically positive CSF patients (n = 2)

Fei Mo

Comparative study 2019

CNS B-ALL

CSF-proteome before and after ITC + induction therapy of CNS positive B-ALL

B-ALL (n = 6)

Yu et al.

Comparative study 2020

CNS B-ALL

Proteomic alterations in CSF induced by chemotherapy

B-ALL (n = 9)

Priola et al.

Comparative study 2015

CNS B-ALL

CNS T-ALL

Proteomic alterations in CSF correlated with thromboembolic events and induced by chemotherapy

B-ALL (n = 2)

T-ALL (n = 2)

Reichl et al.

Comparative study 2020

Brain tumor

To quantify CSF-proteome of recurrent medulloblastoma

Recurrent cases of medulloblastoma and prior to treatment (n = 8)

Controls (n = 7): age-matched non-neoplastic. Not further elaborated

Rajagopal et al.

Comparative study 2011

Brain tumor

To investigate putative CSF-proteome biomarkers in medulloblastoma patients

Medulloblastoma (n = 33)

Controls (n = 25): age-matched, “leftover samples drawn for other clinical purposes”

de Bont

Comparative study 2006

Brain tumor

To detect differences in protein expression profiles of CSF from pediatric patients with and without brain tumors

Medulloblastoma (n = 16); high-grade glioma (n = 7); atypical rhabdoid tumor (n = 2); pilocytic astrocytoma (n = 2); plexus carcinoma (n = 2); anaplastic ependymoma (n = 2); germ cell tumor (n = 1)

Control (n = 70; lumbar puncture of pediatric patients 1 year after treatment of ALL [n = 47]; infection [n = 6]; hematological disease [n = 4]; autoimmune disease [n = 2]; idiopathic intracranial hypertension [n = 1]; extra-CNS Hodgkin’s [n = 6]; neuroblastoma [n = 4])

Spreafico et al.

Comparative study 2017

Brain tumor

To characterize the CSF proteome of patients with CSF tumors and to identify biomarkers predictive of metastatic sprea

Medulloblastoma (n = 18); grade II and III ependymoma (n = 1 and 4); PNET (n = 2); AT/RT (n = 1); high-grade glioma (n = 1)

Controls (n = 13, extra-CNS non-Hodgkin’s lymphoma)

Saratsis et al.

Comparative study 2012

Brain tumor

Exploratory study of CSF proteome in pediatric glioma patients

DIPG (n = 10)

GBM (n = 1)

Age-matched controls (n = 4, not further elaborated)

Bruschi et al.

Comparative study 2021

Brain tumor

Putative biomarkers for specific brain tumor subtypes

Pilocytotic astrocytoma (n = 8)

Gangliocytoma (n = 3)

Medulloblastoma (n = 7),

AT/RT (n = 2)

PNET (n = 1)

Other (n = 8)

Controls (n = 17, congenital hydrocephalus)

  1. ALL acute lymphoblastic leukemia, CNS central nervous system, CSF cerebrospinal fluid, ITC intrathecal chemotherapy, MRD Minimal Residual Disease, PCR polymerase chain reaction, DIPG diffuse intrinsic pontine glioma