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Longitudinal Assessment of Circulating Tumor Cells and Outcome in Small Cell Lung Cancer: A Sub-Study of RASTEN-A Randomized Trial with Low Molecular Weight Heparin
Lund Univ, Dept Clin Sci, Div Oncol, Barngatan 4, SE-22185 Lund, Sweden.
Uppsala universitet, Medicinska och farmaceutiska vetenskapsområdet, Medicinska fakulteten, Institutionen för immunologi, genetik och patologi, Neuroonkologi och neurodegeneration. Uppsala universitet, Science for Life Laboratory, SciLifeLab. Lund Univ, Dept Clin Sci, Div Oncol, Barngatan 4, SE-22185 Lund, Sweden.;Skane Univ Hosp, Dept Hematol Radiophys & Oncol, Lasarettsgatan 23A, SE-22185 Lund, Sweden.ORCID-id: 0000-0003-1585-5434
Lund Univ, Dept Clin Sci, Div Oncol, Barngatan 4, SE-22185 Lund, Sweden.;Lund Univ Hosp, Dept Resp Med, Entregatan 7, SE-22185 Lund, Sweden.
2023 (engelsk)Inngår i: Cancers, ISSN 2072-6694, Vol. 15, nr 12, artikkel-id 3176Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Simple Summary Small cell lung cancer (SCLC) is an aggressive lung cancer subtype associated with an overall poor prognosis but a variable response rate to chemotherapy. The measurement of circulating tumor cells (CTCs) offers a non-invasive method to monitor the disease and may provide prognostic information as potential guidance to clinicians in the management of SCLC. However, the value of CTCs during and after chemotherapy appears inconclusive. Here, we show that the detection of CTCs at baseline correlates to overall survival in SCLC, and that persistently detectable CTCs after completion of treatment adds further prognostic value. This suggests that repetitive analysis of CTCs during and after the course of treatment may have a role in the management of SCLC, warranting further studies. Circulating tumor cells (CTCs) may provide a liquid biopsy approach to disease monitoring in small cell lung cancer (SCLC), a particularly aggressive tumor subtype. Yet, the prognostic role of CTCs during and after treatment in relation to baseline remains ill-defined. Here, we assessed the value of longitudinal CTC analysis and the potential of low-molecular-weight heparin (LMWH) to reduce CTC abundance in SCLC patients from a randomized trial (RASTEN). Blood samples were collected at baseline, before chemotherapy Cycle 3, and at 2-month follow-up from 42 patients in total, and CTCs were quantified using the FDA-approved CellSearch system. We found a gradual decline in CTC count during and after treatment, independently of the addition of LMWH to standard therapy. Detectable CTCs at baseline correlated significantly to reduced survival compared to undetectable CTCs (unadjusted hazard ratio (HR) of 2.75 (95% CI 1.05-7.20; p = 0.040)). Furthermore, a persistent CTC count at 2-month follow-up was associated with a HR of 4.22 (95% CI 1.20-14.91; p = 0.025). Our findings indicate that persistently detectable CTCs during and after completion of therapy offer further prognostic information in addition to baseline CTC, suggesting a role for CTC in the individualized management of SCLC.

sted, utgiver, år, opplag, sider
MDPI, 2023. Vol. 15, nr 12, artikkel-id 3176
Emneord [en]
small cell lung cancer, liquid biopsy, circulating tumor cells, prognostic biomarker
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-508056DOI: 10.3390/cancers15123176ISI: 001014216200001PubMedID: 37370786OAI: oai:DiVA.org:uu-508056DiVA, id: diva2:1783417
Tilgjengelig fra: 2023-07-20 Laget: 2023-07-20 Sist oppdatert: 2023-07-20bibliografisk kontrollert

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