Patient case: 60-year-old male with melanoma; genetic feature: NTRK1 rearrangement

Clinical trial: A Study of T-VEC (Talimogene Laherparepvec) With or Without Radiotherapy for Melanoma, Merkel Cell Carcinoma, or Other Solid Tumors

Summary: The purpose of this phase II clinical study is to test the good and bad effects of T-VEC (talimogene laherparepvec) with or without hypofractionated radiotherapy on people with melanoma, Merkel cell carcinoma, or other solid tumors with skin metastasis.


Eligibility: Inclusion Criteria:
  -  Man or woman ≥ 18 years old
  -  Life expectancy > 4 months
  -  Histopathologically confirmed melanoma, Merkel cell carcinoma or other solid tumor malignancy
  -  Cutaneous subcutaneous soft tissue, or superficial lymphatic metastasis not suitable for surgical resection
  -  Eastern Cooperative Oncology Group (ECOG) performance status 0 to 2
  -  Cutaneous subcutaneous soft tissue, or superficial lymphatic metastasis that is amenable to injection and irradiation and > 10 mm in longest dimension
  ° Cutaneous metastasis in a region of previous radiation therapy is amenable to radiation therapy as part of this protocol if at least 6 months has elapsed since prior radiotherapy and the dose of radiotherapy previously administered did not exceed an equivalent dose of 60 Gy in 2 Gy equivalent fractions at the skin surface (using linear-quadratic modeling with alpha/beta=11.5)
  -  Metastasis that is > 10 mm in longest dimensionor exhibits radiotracer uptake consistent with metastasis on PET/CT
  -  Adequate coagulation function (platelet count >50 k/mcL, international normalized ratio of < 1.5)
  -  Completion of other cancer therapy (targeted therapy, chemotherapy, investigational therapy, immunotherapy, radiotherapy, surgery) 14 days prior to first dose of protocol therapy
  -  For patients with breast cancer only:
  -  May continue ongoing antiestrogen therapy (for example, aromatase inhibitor)
  -  May continue ongoing Her2 directed therapy (for example, trastuzumab)
  -  Resolution or stabilization of clinically significant adverse events from prior therapy (completed at least 14 days prior to first dose of TVEC)
  -  Able to provide valid written informed consent
  Exclusion Criteria:
  -  Active herpetic skin lesions or prior complications of HSV-1 infection (such as herpetic keratitis, herpetic encephalitis)
  -  Receipt of a therapeutic anticoagulant
  -  Receipt of live vaccine within 28 days of planned first dose of TVEC
  -  History of symptomatic autoimmune disease (such as lupus, scleroderma, Crohn's disease, ulcerative colitis) requiring systemic treatment (for example corticosteroids or immunosuppressants); replacement therapy (for example, thyroxine, insulin) is not considered a systemic treatment
  -  History of high grade (CTCAE ≥ Grade 3) immune mediated adverse event from prior cancer immunotherapy
  -  History of CTCAE ≥ Grade 2 immune mediated endocrinopathy from prior cancer immunotherapy
  -  Intermittent or chronic use of oral or intravenous antiherpetic drug (such as acyclovir)
  -  Serologic evidence of prior hepatitis B or C infection
  -  Previously infected, but immune (HBsAg negative/anti-HBc positive/anti-HBs positive)
  -  Acutely infected (HBsAg positive/anti-HBc positive/anti-HBc IgM positive/antiHBs negative)
  -  Chronically infected (HBsAg positive/anti-HBc positive/anti-HBc IgM negative/anti-HBs negative)
  -  Known human immunodeficiency virus (HIV) infection
  -  Known leukemia or lymphoma
  -  Common variable immunodeficiency
  -  Patients requiring chronic high dose immunosuppressants including steroids (prednisone daily equivalent of ≥ 10 mg)
  -  Known severe congenital or acquired cellular or humoral immunodeficient or immunocompromised patients
  -  High likelihood of protocol non-compliance (in opinion of investigator)
  -  Woman of childbearing potential unwilling to use effective contraception during protocol treatment and for 3 months after last dose of Talimogene Laherparepvec
  -  Woman of childbearing potential that is pregnant or breast-feeding, or planning to become pregnant or breast-feed during protocol treatment and for 3 months after last dose of Talimogene Laherparepvec

Relevance to patient case: not relevant