PMID- 19226183 OWN - NLM STAT- MEDLINE DCOM- 20090429 LR - 20220408 IS - 1549-1676 (Electronic) IS - 1549-1277 (Print) IS - 1549-1277 (Linking) VI - 6 IP - 2 DP - 2009 Feb 17 TI - Donor-derived brain tumor following neural stem cell transplantation in an ataxia telangiectasia patient. PG - e1000029 LID - 10.1371/journal.pmed.1000029 [doi] LID - e1000029 AB - BACKGROUND: Neural stem cells are currently being investigated as potential therapies for neurodegenerative diseases, stroke, and trauma. However, concerns have been raised over the safety of this experimental therapeutic approach, including, for example, whether there is the potential for tumors to develop from transplanted stem cells. METHODS AND FINDINGS: A boy with ataxia telangiectasia (AT) was treated with intracerebellar and intrathecal injection of human fetal neural stem cells. Four years after the first treatment he was diagnosed with a multifocal brain tumor. The biopsied tumor was diagnosed as a glioneuronal neoplasm. We compared the tumor cells and the patient's peripheral blood cells by fluorescent in situ hybridization using X and Y chromosome probes, by PCR for the amelogenin gene X- and Y-specific alleles, by MassArray for the ATM patient specific mutation and for several SNPs, by PCR for polymorphic microsatellites, and by human leukocyte antigen (HLA) typing. Molecular and cytogenetic studies showed that the tumor was of nonhost origin suggesting it was derived from the transplanted neural stem cells. Microsatellite and HLA analysis demonstrated that the tumor is derived from at least two donors. CONCLUSIONS: This is the first report of a human brain tumor complicating neural stem cell therapy. The findings here suggest that neuronal stem/progenitor cells may be involved in gliomagenesis and provide the first example of a donor-derived brain tumor. Further work is urgently needed to assess the safety of these therapies. FAU - Amariglio, Ninette AU - Amariglio N AD - Cancer Research Center, Sheba Medical Center and Sackler School of Medicine, Tel Aviv University, Tel-Aviv, Israel. FAU - Hirshberg, Abraham AU - Hirshberg A FAU - Scheithauer, Bernd W AU - Scheithauer BW FAU - Cohen, Yoram AU - Cohen Y FAU - Loewenthal, Ron AU - Loewenthal R FAU - Trakhtenbrot, Luba AU - Trakhtenbrot L FAU - Paz, Nurit AU - Paz N FAU - Koren-Michowitz, Maya AU - Koren-Michowitz M FAU - Waldman, Dalia AU - Waldman D FAU - Leider-Trejo, Leonor AU - Leider-Trejo L FAU - Toren, Amos AU - Toren A FAU - Constantini, Shlomi AU - Constantini S FAU - Rechavi, Gideon AU - Rechavi G LA - eng PT - Case Reports PT - Journal Article PL - United States TA - PLoS Med JT - PLoS medicine JID - 101231360 SB - IM MH - Adolescent MH - Ataxia Telangiectasia/*surgery MH - Brain Neoplasms/diagnosis/*etiology/*pathology MH - Humans MH - Living Donors MH - Male MH - Neurons/*pathology/*transplantation MH - Stem Cell Transplantation/*adverse effects MH - Stem Cells/*pathology PMC - PMC2642879 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2009/02/20 09:00 MHDA- 2009/04/30 09:00 PMCR- 2009/02/17 CRDT- 2009/02/20 09:00 PHST- 2007/07/17 00:00 [received] PHST- 2008/12/24 00:00 [accepted] PHST- 2009/02/20 09:00 [entrez] PHST- 2009/02/20 09:00 [pubmed] PHST- 2009/04/30 09:00 [medline] PHST- 2009/02/17 00:00 [pmc-release] AID - 07-PLME-RA-1020 [pii] AID - 07-PLME-RA-1020R3 [pii] AID - 10.1371/journal.pmed.1000029 [doi] PST - ppublish SO - PLoS Med. 2009 Feb 17;6(2):e1000029. doi: 10.1371/journal.pmed.1000029.