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  • 1
    ISSN: 1573-7276
    Keywords: cell adhesion molecule ; cytolysis ; L1 ; monolayer invasion assay ; tumor necrosis factor-α
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: The cell adhesion molecule (CAM) Ll is involved in homotypic and heterotypic adhesion between neural cells. It has recently also been identified on leucocytes. We have investigated the expression of L1 on hematopoietic tumor cell lines and found that several tumors including the ESb-MP lymphoma are positive for L1. A potential role for L1 in spontaneous metastasis formation was examined using these cells. From wild-type (wt) L1high lymphoma cells we selected by a fluorescence-activated cell sorter (FACS) stable L1low expression variants. Syngeneic DBA/2 mice injected subcutaneously with L1low clones showed faster primary tumor growth, developed visceral metastases significantly faster and died earlier than animals carrying L1high wt cells. L1high revertants from the L1low variants showed again a reduced metastatic capacity and a malignancy similar to the wt cells. Expression of L1 on the tumor variants and revertants correlated directly with their homotypic aggregation behaviour in vitro. L1 expression correlated negatively with metastatic capacity. These results suggest that L1 molecules may contribute to the overall malignant potential of the lymphoma cells, presumably by interfering with cell-cell interactions critical for tumor growth and dissemination.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2018-11-06
    Description: Background/Aim: Sunitinib is the current standard of care for first-line (1L) treatment of metastatic renal cell carcinoma (mRCC). Previous studies suggest that a modified treatment schedule may benefit patients. Our aim was to evaluate efficacy and safety regarding sunitinib treatment modification in 1L treatment of mRCC. Materials and Methods: Data were drawn from STAR-TOR, a German real-world registry to evaluate outcomes of patients with mRCC who received 1L sunitinib. Patients were divided into two groups: subsequent treatment modification (SM) or remaining on standard dose/schedule (SS). Time on treatment (TT), progression-free survival (PFS), and overall survival (OS) were estimated. Results: Overall, 297 patients were analyzed; 33% underwent treatment modification. Significant baseline differences between groups were observed; SM patients were older and had a more favourable Karnofsky performance status. SM patients achieved better outcomes than SS patients for median TT (15.1 versus 3.9 months; p〈0.0001), PFS (15.1 versus 6.0; p〈0.0001), and OS (38.1 versus 13.7; p〈0.0001). Diarrhoea (34%/17%), fatigue (30%/11%), hand-foot syndrome (28%/10%), and stomatitis (20%/6%) were more frequently reported in SM versus SS; incidence was reduced following schedule/dose modification (except diarrhoea). Conclusion: In addition to AE mitigation, sunitinib treatment modification may help improve efficacy outcomes in mRCC by prolonging treatment duration.
    Print ISSN: 0250-7005
    Electronic ISSN: 1791-7530
    Topics: Medicine
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