PMID- 8976366 OWN - NLM STAT- MEDLINE DCOM- 19970122 LR - 20190816 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 92 IP - 2 DP - 1996 Dec TI - Dicentric (9;20)(p11;q11) identified by fluorescence in situ hybridization in four pediatric acute lymphoblastic leukemia patients. PG - 111-5 AB - Four children with acute lymphocytic leukemia (ALL) and a dic(9;20) are described. All four patients were diagnosed with pre-B-cell All, and the three for whom information was available were CD10+. Age at diagnosis ranged from 23 months to 12 years. All patients achieved remission, with two in continuous remission for 2 years 6 months and 3 years, one patient relapsed, dying 3 years 2 months after diagnosis, and one patient was lost to follow-up. These four patients were initially diagnosed as having a deletion of 9p and loss of one chromosome 20. Re-examination of the karyotypes indicated a possible dic(9;20). The dicentric chromosome was verified using dual-color fluorescence in situ hybridization (FISH) with centromeric probes for chromosomes 9 and 20 on interphase nuclei. Three of the four patients had multiple chromosomal abnormalities in addition to the translocation; one was hypodiploid, one was pseudodiploid, and two were hyperdiploid. This dicentric chromosome was recently described in four adult and nine pediatric patients with ALL [8, 9]. All reported patients had CD10+ pre-B-cell All, and achieved remission, as was the case for our four pediatric dic(9;20) patients. Two of our three patients for whom follow-up is available are in continuous remission as were two adults and five pediatric patients in the previous reports. These studies confirm the dic(9;20) as a recurring abnormality in ALL. Due to the subtle nature of the translocation, FISH is very useful in confirming the chromosomal abnormality. FAU - Heerema, N A AU - Heerema NA AD - Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis 46202-5251, USA. FAU - Maben, K D AU - Maben KD FAU - Bernstein, J AU - Bernstein J FAU - Breitfeld, P P AU - Breitfeld PP FAU - Neiman, R S AU - Neiman RS FAU - Vance, G H AU - Vance GH LA - eng PT - Journal Article PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 SB - IM MH - Adult MH - Bone Marrow/pathology MH - Burkitt Lymphoma/*genetics/mortality/pathology/therapy MH - Centromere/pathology MH - Child MH - Child, Preschool MH - *Chromosome Aberrations MH - Chromosome Deletion MH - *Chromosome Disorders MH - Chromosome Mapping MH - *Chromosomes, Human, Pair 20 MH - *Chromosomes, Human, Pair 9 MH - Follow-Up Studies MH - Humans MH - In Situ Hybridization, Fluorescence MH - Infant MH - Interphase MH - Karyotyping MH - Precursor B-Cell Lymphoblastic Leukemia-Lymphoma/*genetics/mortality/pathology/therapy MH - Time Factors MH - *Translocation, Genetic EDAT- 1996/12/01 00:00 MHDA- 1996/12/01 00:01 CRDT- 1996/12/01 00:00 PHST- 1996/12/01 00:00 [pubmed] PHST- 1996/12/01 00:01 [medline] PHST- 1996/12/01 00:00 [entrez] AID - S0165460896001720 [pii] AID - 10.1016/s0165-4608(96)00172-0 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 1996 Dec;92(2):111-5. doi: 10.1016/s0165-4608(96)00172-0.