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Development of [11C]erlotinib Positron Emission Tomography for In Vivo Evaluation of EGF Receptor Mutational Status
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för radiologi, onkologi och strålningsvetenskap, Enheten för nuklearmedicin och PET.
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2013 (Engelska)Ingår i: Clinical Cancer Research, ISSN 1078-0432, E-ISSN 1557-3265, Vol. 19, nr 1, s. 183-193Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

PURPOSE: To evaluate whether, in patients with non-small cell lung carcinoma (NSCLC), tumor uptake of [(11)C]erlotinib can be quantified and imaged using positron emission tomography and to assess whether the level of tracer uptake corresponds with the presence of activating tumor EGF receptor (EGFR) mutations.EXPERIMENTAL DESIGN: Ten patients with NSCLCs, five with an EGFR exon 19 deletion, and five without were scanned twice (test retest) on the same day with an interval of at least 4 hours. Each scanning procedure included a low-dose computed tomographic scan, a 10-minute dynamic [(15)O]H(2)O scan, and a 1-hour dynamic [(11)C]erlotinib scan. Data were analyzed using full tracer kinetic modeling. EGFR expression was evaluated using immunohistochemistry.RESULTS: The quantitative measure of [(11)C]erlotinib uptake, that is, volume of distribution (V(T)), was significantly higher in tumors with activating mutations, that is, all with exon 19 deletions (median V(T), 1.76; range, 1.25-2.93), than in those without activating mutations (median V(T), 1.06; range, 0.67-1.22) for both test and retest data (P = 0.014 and P = 0.009, respectively). Good reproducibility of [(11)C]erlotinib V(T) was seen (intraclass correlation coefficient = 0.88). Intergroup differences in [(11)C]erlotinib uptake were not correlated with EGFR expression levels, nor tumor blood flow.CONCLUSION: [(11)C]erlotinib V(T) was significantly higher in NSCLCs tumors with EGFR exon 19 deletions.

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2013. Vol. 19, nr 1, s. 183-193
Nationell ämneskategori
Radiologi och bildbehandling
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URN: urn:nbn:se:uu:diva-189064DOI: 10.1158/1078-0432.CCR-12-0289PubMedID: 23136193OAI: oai:DiVA.org:uu-189064DiVA, id: diva2:580593
Tillgänglig från: 2012-12-23 Skapad: 2012-12-23 Senast uppdaterad: 2017-12-06Bibliografiskt granskad

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