Exam 2 Flashcards
(159 cards)
Types of Skin Cancer
- Basal Cell Skin (BCS) cancer
- Squamous cell skin (SCS) cancer
- Melanoma: most metastasis-prone type
Risk factors for skin cancer
- Ultraviolet (UV) light exposure
- Moles
- Fair skin, freckling, light hair
- Familial hx of melanoma
Melanoma diagnosis: ABCDE
- Asymmetry: one side is different from the other
- Border: irregular, notched, blurred
- Color: mixed
- Diameter: larger than 6 mm
- Evolve: mole evolves over time
Melanoma staging: I ~ V
- Confined to the epidermis; “in situ”
- Invasion of the papillary dermis
- Filling of the papillary dermis but not extending to the reticular dermis
- Invasion of the reticular dermis
- Invasion of the deep, SQ tissue
Familial vs Sporadic melanoma
- Familial: germline mutation of CDKN2A, CDK4) encoding for p16INK4A and p14ARF
- Sporadic: random acquired mutations in p16INK4A
Targeted therapy:
- Most common mutation
- Regimens
- Target cancer’s specific protein(s) that contributes to the growth and survival of cells
- Most common BRAF mutation: V600E → vemurafenib, dabrafenib
- Targeted MEK inhibitor → trametinib
- BRAF + MEK = standard of care for melanoma
Immunotherapy: checkpoint targets, (+), (-)
- Immune checkpoints: PD-1/-L1 axis, CTLA-4
- (+): pts own immune system to destroy cancer cells, memory against cancer specific antigens result in more durable response, improve efficacy when used in combination
- (-): autoimmune disease, resistance, heterogenous response
Systemic therapy: Immune Checkpoint Inhibitors (ICIs)
- MoA
- Formulation
- Drug - target
- Block target protein “checkpoints” to turn on an immune response
- IV formulation
- Ipilimumab - CTLA-4
- Pembrolizumab, Nivolumab - PD-1
- Atezolizumab - PD-L1
- Relatlimab - LAG-3
Systemic therapy: BRAF/MEK inhibitor targeted therapy
- Why given together?
- Formulation
- BRAF + MEK drugs
- Prolong time to resistance
- Improve toxicity profile
- Increase overall efficacy
- Oral formulation
- Dabrafenib + Trametinib
- Vemurafenib + Cobimetinib
- Encorafenib + Binimetinib
Treatment by stage (Localized)
- Stage 0 in situ or 1A
- Stage IB or II
- Wide excision
- Wide excision +/- sentinel node biopsy
- Early stage = surgical resection
Adjuvant tx for resected Stage III melanoma
- Stage IIIA (sentinel node +), IIIB/C/D (SN+)
- Adjuvant treatment
- Nodal basin ultrasound surveillance or complete lymph node dissection + systemic therapy or observation based on risk of recurrence
- Nivolumab: Stage IIIB/C
- Pembrolizumab: Stage IIIA w/ sentinel lymph node (SLN) metastasis >1 mm or stage IIIB/C
- Dabrafenib+Trametinib: pts w/ BRAF V600 activating mutations; stage IIIA with SNL mets >1 mm or stage IIIB/C
Treatment by stage: Unresectable
- Stage III (satellite/ in-transit lesions)
Intralesional injections, local ablation, topical imiquimod
What is Talimogene laherparepvec (T-VEC)?
- Indication
- MoA
- Administration
- Dosing (Max dose per visit)
- AEs
- Monitor/Precautions
- Oncolytic virus based on HSV-1
- Unresectable stage III melanoma with in-transit or satellite lesions
- Selectively infects, replicates inside, destroys cancer cells
- Intralesional injection
- Inject from largest to smallest; max = 4 mL
- Chills, fatigue, fever, injection site pain, N, flu-like
- Viral transmission risk
Treatment by stage: Metastatic Melanoma First-line therapy (systemic)
- Combination ICI
- Monotherapy ICI
- BRAF V600-activating mutations
Combination ICI (preferred)
- Nivolumab + ipilimumab/relatlimab
Monotherapy ICI
- Pembrolizumab
- Nivolumab
BRAF V600-activating Mutations
- Dabrafenib + trametinib
- Vemurafenib + Cobimetinib
- Encorafenib + binimetinib
ICI vs BRAF/MEK as 1st line for pts w/ BRAF V600-activating mutations
- Rapidly growing, symptomatic
- Slow growing, asymptomatic
- Start with BRAF/MEK, faster onset
- Start with ICI due to increased overall survival
Risk factors associated with VTE in cancer patients: Patient-/Treatment-/Tumor-related
- Age, comorbidities, immobilization (hospitalization), previous VTE, hereditary thrombophilia
- Chemo, hormonal, RBC transfusions & erythropoiesis-stimulating agents, surgery, radiation, central venous catheters
- Tumor type (VH: gastric pancreas, brain, H: lung, hematologic, gynecologic, renal, bladder), advanced stage, localized tumor compression
Prevention of VTE in Inpatient
Enoxaparin, Dalteparin, Fondaparinux, Heparin
Prevention of VTE in Outpatient (Ambulatory): Criteria, Recommended agents, Duration
- Cancer patients, high-risk (Khorana score 2), receiving/starting chemotherapy
- DOACs: apixaban, rivaroxaban
- LMWH: enoxaparin, dalteparin
- <6 months
Initial treatment of VTE
Enoxaparin, Dalteparin, Rivaroxaban, Apixaban
Maintenance treatment of VTE: agents & duration
- Enoxaparin, Dalteparin, Rivaroxaban, Apixaban, Edoxaban
- Duration >3 months
Risk factors for extravasation: Infusion procedure-/Patient-/Drug-related
- Peripheral > central access
- Small & fragile veins, multiple previous venipunctures, obesity, conditions with an altered or impaired circulation, communication difficulties or young children
- Overall vesicant properties of the drug
Vesicants Chemotherapeutic drugs (ABC MTV)
Anthracyclines, Bendamustine, Cisplatin, Mitoxantrone, Taxanes, Vinca alkaloids
Prevention of extravasation
- Education and training of HCP
- Ensure appropriate vascular access
- Selection of appropriate cannula and needle
- Patient education
- Development of local institutional guideline for prevention and management of extravasation
Management of anthracyclines, alkylating agents: Localize & Neutralize by ___
- Localize by applying cold compresses for 20 mins QID for 1-2 days
- Neutralize by using specific antidotes