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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10 Suppl
pubmed:dateCreated
1999-11-24
pubmed:abstractText
Nine radioimmunotherapy (RAIT)-naive patients with medullary thyroid cancer received high doses of 131I-MN-14 F(ab)2 anti-carcinoembryonic antigen monoclonal antibody (232-486 mCi), five in combination with bone marrow harvest, without prior granulocyte colony stimulating factor (G-CSF) injections (group 1) and the other four using peripheral blood stem cell harvest (PBSCH) preceded by G-CSF administration of 10 microg/kg per day for 5 days for stem cell mobilization, 6-8 days before RAIT (group 2). The amounts of radioactivity (mCi) given in both groups were similar (312 +/- 93 versus 424 +/- 65; P = NS). The percent platelet loss at nadir, duration of grade 4 thrombocytopenia, and time to complete recovery (TTCR, measured from the day of treatment), were 83 +/- 17%, 2.5 +/- 0.7 days, and 45 +/- 8 days in group 1, respectively, compared with 88 +/- 6%, 3.0 +/- 2.6 days, and 50 +/- 24 days in group 2 (P = NS), respectively. In contrast, the percent WBC loss at nadir, duration of grade 4 leukopenia, and TTCR of WBCs were 72 +/- 12%, 0.0 +/- 0.0 day, and 42 +/- 12 days in group 1, respectively, compared with 93 +/- 3%, 8.0 +/- 3.6 days, and 263 +/- 136 days in group 2, respectively (P < 0.02, 0.03, and 0.05 for differences of percent loss, duration of nadir, and TTCR, respectively). The difference in WBC toxicity after RAIT with bone marrow harvest and PBSCH is thought to be due to the administration of G-CSF for stem cell mobilization within 1 week before RAIT, which may sensitize the "endogenous" granulocyte precursors to subsequent RAIT. Preclinical data of RAIT in mice showed that the time of G-CSF administration before RAIT is critical: increased WBC toxicity was seen in mice given RAIT 3 or 7 days after a 5-day course of G-CSF (81 and 57% WBC loss, respectively) compared with those given no G-CSF or G-CSF 10 or 14 days before RAIT (45-50%) WBC loss). In conclusion, our data indicate that the timing of RAIT after the administration of G-CSF for PBSCH may influence WBC toxicity and recovery after this treatment and may have important implications on the design of high-dose RAIT trials combined with PBSCH.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
1078-0432
pubmed:author
pubmed:issnType
Print
pubmed:volume
5
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
3337s-3342s
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1999
pubmed:articleTitle
Importance of timing of radioimmunotherapy after granulocyte colony-stimulating factor administration for peripheral blood stem cell harvest.
pubmed:affiliation
Garden State Cancer Center, Belleville, New Jersey 07109, USA. gscancer@att.net
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.