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Targeted Therapy of Pediatric Cancer (2nd Edition)

A special issue of Cancers (ISSN 2072-6694). This special issue belongs to the section "Pediatric Oncology".

Deadline for manuscript submissions: 10 May 2026 | Viewed by 1313

Special Issue Editor


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Guest Editor
Department of Paediatrics, Division of Oncology and Haematology, Charité—Universitätsmedizin Berlin, 13353 Berlin, Germany
Interests: pediatric sarcoma; genetics; epigenetics; targeted therapy
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue is the second edition of the Special Issue titled “Targeted Therapy of Pediatric Cancer”.

Today, more than 80% of children diagnosed with cancer can be cured. Nevertheless, cancer is still one of the most common causes of death in children and adolescents. Established therapies such as chemotherapy, radiation, and surgery have often reached their limits of toxicity, and further intensification of therapy seems impossible. In more than half of all cancer survivors, these therapies are associated with mutilation, intellectual disability, and/or genetic damage. At the same time, therapeutic success in refractory or recurrent tumors is unsatisfactory, with overall progression-free survival rates between 10 and 20% after two years, despite intensive multimodal treatment approaches.

Global (epi-)genetic NGS sequencing approaches have shown that pediatric tumors are fundamentally different from adult malignancies in terms of their cellular origin, epidemiology, lower mutational burden, driver mutations, and underlying mutational processes. In addition, they have established extensive molecular diagnostic pipelines to identify biomarkers and have identified potentially treatable mutations in 25–50% of pediatric tumors to date. These findings have led to novel targeted and immunotherapeutic treatment approaches and, in some patients with refractory cancers, to the exploration of these agents as components of first-line treatment.

However, it must also be noted that no effective therapeutic approaches have yet been identified for many tumor entities despite extensive molecular analyses. On the other hand, their development is very dynamic, and new intelligent preclinical models, such as immunotherapies with tumor-specific T cells, oncolytic viruses, PDX models, and phase II clinical trials with targeted therapeutics, are driving this development forward and giving rise to the hope that future treatments will have the potential to improve cure rates and reduce their impact.

The goal of this second Special Issue is to provide a platform for colleagues who are pursuing new, groundbreaking treatment approaches to present their findings. We aim to provide an overview of current developments in the field of molecular therapies, highlight advances in the use of targeted drugs and immunotherapies, and highlight issues that still need to be addressed in the treatment of pediatric tumors.

Prof. Dr. Günther H.S. Richter
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Cancers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2900 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • leukemia
  • lymphoma
  • pediatric solid malignancies
  • targeted therapy
  • biomarker discovery
  • actionable mutations
  • drug vulnerabilities
  • combination therapy
  • immunotherapeutic approaches
  • preclinical studies

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Published Papers (1 paper)

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Review

17 pages, 315 KB  
Review
The Puzzle of Genetic Stability and Chromosomal Copy Number Alterations for the Therapy of Ewing Sarcoma
by Günther H. S. Richter, Andreas Ranft, Maximilian Kerkhoff, Marvin Jens, Ina E. Kirchberg and Uta Dirksen
Cancers 2025, 17(22), 3719; https://doi.org/10.3390/cancers17223719 - 20 Nov 2025
Viewed by 715
Abstract
Studies of the genomic stability of Ewing sarcoma (EwS) have produced contradictory findings. While they are generally characterized by low mutation rates of individual genes, several cases exhibit genomic alterations that manifest as chromosomal gains and losses. Taken together, these alterations represent independent [...] Read more.
Studies of the genomic stability of Ewing sarcoma (EwS) have produced contradictory findings. While they are generally characterized by low mutation rates of individual genes, several cases exhibit genomic alterations that manifest as chromosomal gains and losses. Taken together, these alterations represent independent biomarkers for EwS, such as loss of heterozygosity (LOH) or an altered genome. Patients with primary EwS tumors with fewer than three copy number alterations (CNAs) have a better prognosis than those with more CNAs. The functional mechanisms underlying this chromosomal instability are not yet clear. However, there are indications that this may be directly caused by the EWSR1::ETS translocations that are characteristic of EwS. The transcriptional behavior of the chimeric transcription factor EWSR1-FLI1 leads to the formation of R-loop DNA–RNA hybrids that form when RNA binds back to DNA during transcription and increased replication stress, which may result in structural chromosomal changes. Additionally, the formation of EWSR1 fusion genes in EwS results in the loss of one or both wild-type EWSR1 alleles in sarcoma cells. As chromosome segregation has been observed under loss of wild-type EWSR1, EWSR1 loss has been proposed as a potential source of LOH. So, it is highly probable that a chromosomal translocation and the subsequent formation of the EWSR1-ETS fusion protein cause the genomic alterations in EwS. This indicates that targeted therapy should be directed against the CNA and LOH biology caused by the fusion protein. Full article
(This article belongs to the Special Issue Targeted Therapy of Pediatric Cancer (2nd Edition))
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