Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1996-7-26
pubmed:abstractText
Rearrangement of the MLL (myeloid-lymphoid or mixed-lineage leukemia) gene through a reciprocal chromosomal translocation is found in 5% of adult acute myeloid (AML) and 10% of pediatric acute lymphoid (ALL) leukemia. More than 25 different reciprocal chromosomal translocations, with an 11q23 breakpoint, fuse the MLL gene (also named ALL-1, HRX and Htrx1) to a second partner gene. These leukemias have poor prognosis and frequently have a monocytic, lymphoid or biphenotypic (myeloid and lymphoid) antigen expression in blast cells. Approximately 20-30% of patients diagnosed as having adult de novo, AML have normal chromosomes by metaphase analysis and the majority of these patients have good prognosis. With the use of reverse transcriptase-polymerase chain reaction (RT-PCR) technique and Southern blot analysis, we found that seven of 34 such patients (21%) had a tandem partial duplication of exons 2 to 6 or 2 to 8 of the MLL gene. These seven patients showed a median survival of 2.7 months, compared to a 6.8 months median survival for all other patients in the study. If confirmed on a large series of patients, our findings may help differentiate AML with normal karyotype and poor prognosis from those with normal karyotype and a more favorable prognosis.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0887-6924
pubmed:author
pubmed:issnType
Print
pubmed:volume
10
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
774-80
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:8656671-Acute Disease, pubmed-meshheading:8656671-Adult, pubmed-meshheading:8656671-Base Sequence, pubmed-meshheading:8656671-Bone Marrow, pubmed-meshheading:8656671-Chromosomes, Human, Pair 11, pubmed-meshheading:8656671-DNA-Binding Proteins, pubmed-meshheading:8656671-Exons, pubmed-meshheading:8656671-Female, pubmed-meshheading:8656671-Humans, pubmed-meshheading:8656671-Karyotyping, pubmed-meshheading:8656671-Leukemia, Myeloid, pubmed-meshheading:8656671-Male, pubmed-meshheading:8656671-Middle Aged, pubmed-meshheading:8656671-Molecular Sequence Data, pubmed-meshheading:8656671-Multigene Family, pubmed-meshheading:8656671-Myeloid-Lymphoid Leukemia Protein, pubmed-meshheading:8656671-Neoplasm Proteins, pubmed-meshheading:8656671-Polymerase Chain Reaction, pubmed-meshheading:8656671-Prognosis, pubmed-meshheading:8656671-Proto-Oncogenes, pubmed-meshheading:8656671-RNA Splicing, pubmed-meshheading:8656671-Survival Rate, pubmed-meshheading:8656671-Transcription Factors, pubmed-meshheading:8656671-Translocation, Genetic
pubmed:year
1996
pubmed:articleTitle
MLL tandem duplication and multiple splicing in adult acute myeloid leukemia with normal karyotype.
pubmed:affiliation
Cancer Biology Division, Department of Pathology, Anatomy and Cell Biology, Thomas Jefferson University, Philadelphia, PA, USA.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.