Phase I trial of Seneca Valley Virus (NTX-010) in children with relapsed/refractory solid tumors: a report of the Children's Oncology Group.

Phase I trial of Seneca Valley Virus (NTX-010) in children with relapsed/refractory solid tumors: a report of the Children's Oncology Group.
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DOI:
10.1002/pbc.25269
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发表时间:
2015-05
影响因子:
3.2
通讯作者:
Blaney, Susan M.
Blaney, Susan M.
中科院分区:
医学3区
文献类型:
--
作者:
Burke, Michael J.;Ahern, Charlotte;Weigel, Brenda J.;Poirier, John T.;Rudin, Charles M.;Chen, Yingbei;Cripe, Timothy P.;Bernhardt, M. Brooke;Blaney, Susan M.

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确定Seneca Valley病毒(NTX-010)在复发性/难治性实体瘤儿童中的MTD。患有神经母细胞瘤、横纹肌肉瘤或具有神经内分泌特征的罕见肿瘤的患者(≥ 3至≤ 21岁)合格。A部分(NTX-010单次给药)入组了3个剂量水平[1×109病毒颗粒(vp)/kg(n=6)、1×1010 vp/kg(n=3)、1× 1011 vp/kg(n=4)]的13例患者。诊断包括神经母细胞瘤(n=9)、横纹肌肉瘤(n=2)、类癌(n=1)和肾上腺皮质癌(n=1)。部分B在两剂NTX-010(1×1011 vp/kg,第8和29天)中添加环磷酰胺(CTX)(第1-14天口服CTX(25 mg/m2/天),第8和29天IV CTX(750 mg/m2))。9例患者入组B部分。诊断包括神经母细胞瘤(n=3),横纹肌肉瘤(n=1),肾母细胞瘤(n=3)和肾上腺皮质癌(n=2)。A部分的12例患者可评价毒性。在剂量水平1时有1例DLT(3级疼痛)。其他≥3级相关不良事件(AE)包括白细胞减少症(n=1)、中性粒细胞减少症(n=3)、淋巴细胞减少症(n=3)和肿瘤疼痛(n=1)。部分B未发生DLT。B部分的其他≥3级相关AE包括:白细胞减少症(n=3)、恶心(n=1)、呕吐(n= 1)、贫血(n =1)、中性粒细胞减少症(n=4)、血小板(n=1)、丙氨酸转氨酶(n=1)和淋巴细胞减少症(n=2)。所有患者在3周内从血液和粪便中清除了NTX-010,其中17/18名患者产生中和抗体。NTX-010在患有复发性/难治性实体瘤的儿科患者中单独或与环磷酰胺组合的测试剂量水平下是可行的和可耐受的。然而,尽管添加了环磷酰胺,中和抗体似乎限制了适用性。
To determine the MTD of Seneca Valley Virus (NTX-010) in children with relapsed/refractory solid tumors. Patients (≥ 3 to ≤ 21 years) with neuroblastoma, rhabdomyosarcoma, or rare tumors with neuroendocrine features were eligible. Part A (single dose of NTX-010) enrolled 13 patients at 3 dose levels [1×109 viral particles (vp)/kg (n=6), 1×1010 vp/kg (n=3), 1× 1011 vp/kg (n=4)]. Diagnoses included neuroblastoma (n=9), rhabdomyosarcoma (n=2), carcinoid tumor (n=1), and adrenocorticocarcinoma (n=1). Part B added cyclophosphamide (CTX) (oral CTX (25 mg/m2/day) days 1-14 and IV CTX (750 mg/m2) days 8 and 29) to two doses of NTX-010 (1×1011 vp/kg, days 8 and 29). Nine patients enrolled to Part B. Diagnoses included neuroblastoma (n=3), rhabdomyosarcoma (n=1), Wilms tumor (n=3), and adrenocorticocarcinoma (n=2). Twelve patients on Part A were evaluable for toxicity. There was a single DLT (grade 3 pain) at dose level 1. Additional grade ≥3 related adverse events (AEs) included leukopenia (n=1), neutropenia (n=3), lymphopenia (n=3), and tumor pain (n=1). No DLTs occurred on part B. Other grade ≥3 related AEs on Part B included: leukopenia (n=3), nausea (n=1), emesis (n=1), anemia (n=1), neutropenia (n=4), platelets (n=1), alanine aminotransferase (n=1) and lymphopenia (n=2). All patients cleared NTX-010 from blood and stool by 3 weeks with 17/18 patients developing neutralizing antibodies. NTX-010 is feasible and tolerable at the dose levels tested in pediatric patients with relapsed/refractory solid tumors either alone or in combination with cyclophosphamide. However, despite the addition of cyclophosphamide, neutralizing antibodies appeared to limit applicability.
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