Clinical and molecular characteristics of WNT medulloblastomas

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Abstract

WNTMBaccounts for about 10% of all medulloblastomas and have a favorable outcome in patients under 16 years according international data. We analyzed clinical and molecular characteristics of 20 patients with WNTMBpatients. The study was approved by the Independent Ethics Committee of the Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology. The molecular group verification was performed by Nanostring gene expression profiling. The detection of CTNNB1 and TP53 gene mutations was carried out with Sanger sequencing. WNT Medulloblastoma are mainly classic (18/20 patients), non-metastatic (19/20 patients). Gross total resection was performed in 18 patients. Somatic CTNNB1 mutations were found in 17 patients, somatic TP53 were identified in 2 patients. 19/20 assessable patients are disease-free with a median follow-up of 23 months. One patient died from the progression of the disease. WNT MB patients have an overall favorable outcome, even for metastatic and TP53 positive tumors. The reduction in the intensity of therapy is indicated forWNTMB in case of reliable identification ofWNTMB.

About the authors

L. I. Papusha

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

Author for correspondence.
Email: lyudmila.papusha@fcchomoscow.ru
ORCID iD: 0000-0001-7750-5216

Correspondence: Lyudmila I. Papusha, MD, PhD,Oncologist, Department of pediatric hematology, oncology Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology,Immunology Ministry of HealthcareofRussian Federation.

Address: Russia 117997, Moscow,Samory Mashela st., 1

Россия

L. A. Yasko

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0003-3007-3772
Moscow Россия

A. P. Ektova

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0001-5461-7442
Moscow Россия

K. A. Voronin

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0001-7578-9657
Moscow Россия

A. A. Merishavyan

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0002-5310-5928
Moscow Россия

I. G. Storozhenko

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0001-6296-4305
Moscow Россия

E. A. Salnikova

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0002-9846-2793
Moscow Россия

I. D. Borodina

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0002-6805-7797
Moscow Россия

A. V. Nechesnyuk

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0002-2537-6157
Moscow Россия

G. V. Tereshchenko

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0001-7317-7104
Moscow Россия

N. A. Strumila

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0003-4164-004X
Moscow Россия

A. N. Zaichikov

Regional Children’s Clinical Hospital № 1

ORCID iD: 0000-0002-0462-6591
Ekaterinburg Россия

I. M. Yunusova

N.М. Kuraev Children's Republican Clinical Hospital

Makhachkala Россия

H. E. Khasmagomadova

Republican Oncological Dispensary

Grozny Россия

A. A. Rumyantsev

Altai Regional Clinical Center of Protection of Motherhood and Childhood

Barnaul Россия

M. S. Kubirov

Morozov Children's Clinical Hospital

ORCID iD: 0000-0003-1308-2175
Moscow Россия

I. V. Botalova

Regional Children's Clinical Hospital

Perm Россия

N. V. Mikava

Regional Children's Clinical Hospital

Krasnodar Россия

E. N. Grishina

Children's Republican Clinical Hospital

Kazan Россия

S. K. Gorelyshev

N.N. Burdenko National Medical Research Center of Neurosurgery of the Ministry of Health of the Russian Federation

Moscow Россия

S. G. Kovalenko

Regional Oncohematological Center for Children and Adolescents

Chelyabinsk Россия

A. E. Druy

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0003-1308-8622
Moscow Россия

G. A. Novichkova

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

ORCID iD: 0000-0002-2322-5734
Moscow Россия

A. I. Karachunsky

Dmitriy Rogachev National Medical Research Center of Pediatric Hematology, Oncology, Immunology Ministry of Healthcare of Russian Federation

Moscow Россия

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