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Innovations in Cancer Treatment Stephanie Magdanz, PharmD, BCOP Oncology Clinical Pharmacist Boise VA Medical Center March 6, 2016 Disclosures Stephanie Magdanz, PharmD, BCOP reports having no financial or advisory relationships with corporate organizations Learning Objectives Recognize the disadvantages & challenges of traditional cancer therapies. Explain how monoclonal antibodies stimulate the immune system to attack cancer cells. Summarize the process of CAR-T therapy. Describe how viruses can be used to treat cancer. Cancer Statistics In the U.S., 1 of every 2 men and 1 of every 3 women in will receive a cancer diagnosis in their lifetime Cancer is the #2 cause of death in the United States • Projected to surpass heart disease as #1 in the next decade Cancer is the #1 cause of death in Idaho Cancer is the #1 cause of death by disease in children • Every 3 minutes, somewhere in the world, a child is diagnosed with cancer There are now >14 million cancer survivors in the U.S. • 5-year survival for all cancers is >68% (2004-2010) up from 49% in the late 1970s The FDA approved 18 new cancer drugs in 2015 compared to 6 in 2010 Currently 800 ongoing clinical trials for new cancer immunotherapy drugs; only 5% of cancer patients participate in clinical trials Cancer spending is roughly 5% of the total spent on medical care in the U.S in general www.cdc.gov, www.strongagainstcancer.org, Sweeney N, et al. Boston Healthcare. May 2015. Cancer Statistics www.cdc.gov Cancer Statistics www.cdc.gov History of Cancer Treatment 1550 BC – Egyptian papyrus written by Imhotep is the first documentation of cancer 460 BC – Hippocrates “names” cancer using the terms carcinos & carcinoma from the Greek word for crab 160 AD – Medical conditions were explained by the four humors (blood, black bile, yellow bile, white bile) 1775 – British surgeon Percival Pott reported increased scrotum cancer among chimney sweeps 1846/1865 – Anesthesia & antiseptic (carbolic acid) discovered 1878 – Paul Erlich discovers the principle of what will later be known as chemotherapy 1895 – Discovery of x-ray & experiments in treating cancer 1937 – National Cancer Institute Act signed by President Roosevelt History of Cancer Timeline www.cancerfilms.org, The History of Cancer www.cancer.org History of Cancer Treatment 1941 – WWII soldiers exposed to mustard gas found to have toxic changes to bone marrow • Led to development of alkylating agents in 1943 at Yale 1945 – American Cancer Society founded 1948 – Sidney Farber, the “father of chemotherapy” used aminopterin (methotrexate) to treat leukemia patients 1952 – Screening being done using pap smear, colonoscopy & mammography 1955 – Marlboro Man ad campaign; sales up 5000% over 8 months 1956 – First bone marrow transplant done in leukemia patient 1957 – US Surgeon General report that cigarette smoking is causative factor in lung cancer 1969/1971 – War on Cancer; Nixon signs National Cancer Act 1976 – Mammogram Screening Trial results in 20% reduction in deaths for women >55 History of Cancer Timeline www.cancerfilms.org, The History of Cancer www.cancer.org History of Cancer Treatment 1982 – High-dose chemo + autologous HSCT in solid tumors; found to have no benefit by late 1990s 1992 – Breast cancer HER-2 gene identified 1999 – Imatinib (Gleevec®) trial – launch of targeted therapies 2003 – Human Genome Project completed – map of entire sequence of human DNA 2006 – Cancer Genome Atlas – gene sequencing of tumors 2010 – President’s Cancer Panel – increased research 2011 – Emphasis on Oncology immunotherapy research (ie: ipilimumab for malignant melanoma) 2015 – President Obama’s “Moonshot to Cure Cancer” – calls for expanded funding & screening, increased access to clinical trials, insurance coverage of gene testing, decreased prescription drug prices, & sharing of information History of Cancer Timeline www.cancerfilms.org, The History of Cancer www.cancer.org, “Moonshot” article www.healthline.com Cancer Treatment: Drawbacks & Challenges Surgery, radiation & chemotherapy • Not all patients who need the treatment are eligible • Considerable adverse effects including death, pain, infections, heart failure, fatigue, nausea/vomiting, etc • Long-term sequelae – heart failure, pulmonary, secondary cancers • Some cancer cells may survive causing progression or recurrence Tumor resistance • Immune system has a critical role in cancer pathogenesis (ie: immunocompromised patients) • Solid organ transplant – 2-fold increase in solid tumors & 20fold increase in skin cancer, lymphoma & sarcomas • HIV – 40% of AIDS patients develop cancer • Tumors consist mainly of normal tissue components (self) Cancer immunotherapy www.dendreon.com, BiTE antibodies www.amgenoncology.com Cancer Treatment: Drawbacks & Challenges Tumor resistance (cont.) • Immune system is trained to avoid attacking itself • Cytotoxic T lymphocytes (CTLs) recognize tumor antigens, bind & cause tumor cell lysis Problem – tumors can evade T cell recognition (escape phase) • Immune system exhaustion • Tumor growth is too fast for immune system to keep up • Checkpoints on the T cell (CTLA-4 & PD-1) are upregulated causing the T cell to turn off • Tumors can secrete immunosuppressive cytokines Solution – the new era of cancer treatment • Encourage immune cells that recognize tumor • Help immune system track down wandering cancer cells & destroy them • Develop tumor specific Ab’s outside the body & inject them into patients Cancer immunotherapy www.dendreon.com, BiTE antibodies www.amgenoncology.com Cancer Treatment: A New Era Cytokines – T cell growth factors that stimulate immune response (ie: interferons, interleukins) Allogeneic HSCT – tumor cells eliminated through high-dose chemotherapy followed by graft-versus-tumor effect Monoclonal Antibodies – direct or indirect immune response • Rituximab – immune-mediated cytotoxic response • Trastuzumab & cetuximab – block signal pathways needed for cell growth • Bevacizumab – block angiogenesis needed for oxygen & nutrients • Brentuximab vedotin – antibody drug conjugate (ADC) combining a monoclonal Ab with cyctotoxic drug • Tositumomab 131I – antibody combined with radioactive particle Oral molecular target drugs (aka tyrosine kinase inhibitors, signal transduction inhibitors, “nibs”) Cancer immunotherapy www.dendreon.com Monoclonal Antibodies Trastuzumab Bevacizumab Cetuximab Panitumumab Tipifarnib Lonafarnib Erlotinib Imatinib Lapatinib Small Molecule TKIs/STIs Hudis CA. NEJM 2007;357(1):41 Sorafenib mTOR LoRusso P M et al. Clin Cancer Res 2011;17:6437-6447 Cancer Treatment: A New Era Autologous cellular immunotherapy – activated APCs are reinfused into patient to direct immune cells vs tumor cell (ie: sipuleucel-T) Immune checkpoint inhibitors – “release the brakes” on the immune system (ie: ipilimumab, nivolumab, pembrolizumab) CAR-T therapy – chimeric antigen receptor (CAR) T cells Immunovirus – therapeutic cancer vaccine Future directions – BiTE antibodies, DNA methylation signature, TMEM score, magic wands, IDH2 blockers, proteomics, intraoperative radiation, CRISP-R technology Cancer immunotherapy www.dendreon.com Patient Case #1: PD-1 Inhibitor ED 33yo male with Hodgkins Lymphoma Apr 2011: standard chemo w/ ABVD (doxorubicin, bleomycin, vinblastine, dacarbazine) x6 cycles 2nd line chemo: GDP (gemcitabine, dexamethasone, cisplatin) 2012: autologous stem cell transplant → recurrence Salvage chemo: brentuximab vedotin (Adcetris®) Salvage chemo: GDP, MOPP (mechlorethamine, vincristine, procarbazine, prednisone), bendamustine Dec 2014: allogeneic stem cell transplant → recurrence Now what??? Patient Case #2: CAR-T Therapy JA 3yo male with Acute Lymphocytic Leukemia (ALL) 2013 – diagnosed at age 18 months 2 year battle chemotherapy → relapsed twice Allogeneic stem cell transplant → relapse Out of treatment options other than hospice Now what??? Strongagainstcancer.org Patient Case #3: Immunovirus SL 20yo female with tennis ball sized GBM (glioblastoma multiforme) brain tumor 2011 – surgery; 98% removed Radiation & chemotherapy (temozolamide) Recurrence 2012 → 1st patient on Phase I Polio immunovirus trial at Duke University Treatment began in May → tumor is larger by June What happened next??? 60 Minutes: Killing Cancer Part 1 & 2, Mar 29, 2015. Available at www.cbsnews.com Immunotherapy: Checkpoint inhibitors Immune system relies on multiple checkpoints to avoid over activation on healthy cells Tumor cells hijack these checkpoints to escape detection CTLA-4 & PD-1 are upregulated on T cell surface in some cancers PD-L1 can be expressed on tumor cells endogenously or induced by association with T cells PD-1:PD-L1 interaction results in T cell suppression (anergy, exhaustion, death) Atkins MB et al. Clinical Care Options slideset 2014. IPILIMUMAB NIVOLUMAB PEMBROLIZUMAB Drake CG et al. Nat Rev Clin Onc. 2014;11:24-37. Immunotherapy: Checkpoint inhibitors In melanoma, renal cell, & other tumors, PD-L1 expression is associated with more aggressive disease Inhibiting CTLA-4 & PD-1 can “release the brakes” Checkpoint inhibitors don’t attack the tumor, they set the T cells straight Activity powerful enough to work in the CNS – T cells go everywhere Melanoma patients – on MRI, brain mets are surrounded by tons of T cells Atkins MB et al. Clinical Care Options slideset 2014. Immunotherapy: Checkpoint blockade Priming phase (lymph node) Effector phase (peripheral tissue) T-cell migration Dendritic cell MHC MHC TCR TCR CD28 CD28 Dendritic cell T cell B7 CTLA-4 CTA-4 Ribas A. N Engl J Med. 2012;366:2517-2519. Cancer cell T cell T cell T cell MHC MHC PD-1 PD-1 PD-L1 PD-L1 Cancer cell Immunotherapy: PD-1 inhibitors Nivolumab (Opdivo®) – FDA approval • Melanoma – unresectable or metastatic; single agent or combination with ipilimumab • NSCLC – metastatic; with progression on or after platinum-based chemotherapy and EGFR or ALK therapy if EGFR or ALK positive • Renal Cell – advanced disease who have received 1 or 2 prior therapies Summary – ORR in patients with advanced NSCLC, melanoma, renal cell carcinoma • • • • • 65 of 306 patients had ORR (CR or PR) 30 of those 65 (46%) had response evident at first tumor eval (8wks) 42 of those 65 (65%) had response lasting >1yr 35 of those 65 (54%) had response ongoing at time of data analysis Response persisted off the drug Nivolumab pkg insert www.opdivo.com, Atkins MB et al. Clinical Care Options slideset 2014. Immunotherapy: PD-1 inhibitors Nivolumab in Hodgkin’s Lymphoma • Phase I – 23 patients who failed >3 previous regimens including brentuximab vedotin and HSCT • ORR 87% (20/23 patients) w/ CR in 4 (17%) with 40-wk follow-up • No life threatening toxicities or treatment deaths Activity in breast, ovarian, colon, bladder, hepatic, gastric, head & neck, pancreatic, GBM, lymphomas, & many others Multiple combinations being studied (ie: with vaccines & with other targeted drugs) Nivolumab package insert www.opdivo.com, Mulcahy N. Medscape.2014. Abstr 289 & 290. Immunotherapy: PD-1 inhibitors Pembrolizumab (Keytruda®) – FDA approval • Melanoma – unresectable or metastatic • NSCLC – metastatic; with progression on or after platinum-based chemotherapy and EGFR or ALK therapy if EGFR or ALK positive • Activity in SCLC, esophageal, breast, ovarian, head & neck, pancreatic, lymphomas, & many others Former President Jimmy Carter • Melanoma diagnosed August 2015 – liver & brain mets • Surgery, radiation, pembrolizumab • Currently no evidence of disease including brain mets Pembrolizumab pkg insert www.keytruda.com, Mulcahy N. Medscape.2014. Abstr 289 & 290, Mills D 2015 www.healthline.com Immunotherapy: PD-1 inhibitors Disease can get worse before it gets better Four distinct response patterns associated with favorable overall survival (OS) • Response in baseline lesions • Stable disease with slow decline in tumor volume • Response following an initial increase in tumor volume • Response following appearance of new lesions Infiltration of patient immune cells can cause an initial increase in tumor volume or appearance of new lesions on imaging scans (know as pseudoprogression) Need 8-12 doses to accurately evaluate patient response Atkins MB et al. Clinical Care Options slideset 2014. Immunotherapy: PD-1 inhibitors Immune-mediated toxicity • Overall, gentler than CTLA-4 inhibitors • Occasional (5-20%) • Fatigue • Rash – maculopapular, pruritis • Diarrhea/colitis – initiate steroids early, taper slowly • Hepatitis/liver enzyme abnormalities • Infusion reactions • Endocrinopathies – thyroid, adrenal, hypophysitis • Infrequent (<5%) • Pneumonitis • Grade 3 or 4 toxicities are uncommon Atkins MB et al. Clinical Care Options slideset 2014 CAR-T Therapy Chimeric antigen receptor (CAR) T cell therapy T cells are transduced with tumor specific CAR Process – blood drawn from patient • T cells extracted using leukapheresis • Transduction of T cells with retroviral vector encoding CARs • CAR-T cells reintroduced into patient – two daily infusions • “Warrior” T cells seek out & destroy enemy cancer cells Purwar R. Engineered T cells slideset 2016., Park JH. Conference Correspondent.ASH 2015 abstract 682. CAR-T Therapy Advantages • Fast & high response rates – 91% CR pediatric ALL; 82% CR adult ALL • No HLA typing needed (like with allogeneic HSCT) • Side effects less harmful than chemo or allo HSCT • Potential to target many antigens (protein, carbohydrate, lipids) • Cut cost by at least 30% compared to allo HSCT Challenges • Cytokine syndrome – treat with steroids • Heavily pretreated patients may not have enough T cells • Long-term sequelae & relapse rates currently unknown Purwar R. Engineered T cells slideset 2016., Park JH. Conference Correspondent.ASH 2015 abstract 682. Immunovirus Therapeutic vaccine – different from prophylactic vaccines Tumors & viruses have dynamic interactions • Malignancy can suppress normal antiviral responses • Many viruses preferentially infect cancer cells • Viral infection can ravage a tumor while leaving adjacent healthy cells untouched Two mechanisms • Modified virus can induce tumor cell lysis through replication within tumor cells • Virus can activate T cell response against tumor antigens through dendritic cells • Injected directly into tumors, but showing effect on cancer elsewhere in the body Ledford H. Nature 2015;526:622., Pietrangelo A. Heathline News 2015 www.healthline.com Immunovirus: Talimogene laherparepvec (Imlygic®) First oncolytic viral therapy approved in the U.S. FDA (Oct 27, 2015) – local treatment of unresectable cutaneous, subQ, & nodal lesions in pts with melanoma recurrent after initial surgery Genetically modified herpes simplex virus – replicates in tumors & produces GM-CSF • Causes cell lysis – releases tumor-derived antigens & GM-CSF • Elicits further antitumor immune response OPTiM trial – phase III multicenter, open label, randomized • 436 advanced melanoma patients; Imlygic® vs GM-CSF • Extended survival by 4.4 months; time to response 4.1 months • SE – fatigue, chills, fever, nausea, flu-like symptoms, injection site pain, cellulitis Being studied in combination with PD-1 inhibitors in melanoma & other solid tumors Talmogene laherparepvec package insert www.imlygic.com Immunovirus: PVS-RIPO PVS-RIPO – genetically engineered poliovirus against GBM • Genetic code of rhinovirus spliced into polivirus to remove it’s disease-causing ablility • Safety – in primates & humans; no nerve cell damage, no ability to cause poliomyelitis, no ability for PVS-RIPO to change back to wild type poliovirus Infused directly into patient’s tumor • Catheter placed into tumor, 2.5ml PVS-RIPO infused in the ICU over 6.5 hours, catheter removed, patient followed, no further treatment Kills tumor cells & recruits immune response vs. the tumor SE – fever, flu-like, diarrhea, headache, N/V, limb weakness, breathing difficulties, brain swelling, etc Future – phase II/III in adults, pediatric brain tumors, other tumor types (showing response in lung, breast, colon, liver, pancreas, kidney, etc) Gromeier M, et al. 2016 www.cancer.duke.edu Immunovirus: What’s Next Other promising virus therapies • Breast cancer vaccine – targets HER-2 neu receptor • CimaVax-EGF – lung cancer vaccine developed in Cuba • Respiratory enteric orphan virus (Reolysin®) • Ovarian cancer vaccine (>80% of patients have metastatic disease) • Trials ongoing in lung, colon, melanoma, sarcoma, head & neck Room for improvement • Need a way to deliver the vaccine systemically • Requires a technique to prevent an immune attack to the virus prematurely Many viruses being studied • Vesicular stomatitis virus that infects cattle but not humans • Virus that hitch-hikes on certain blood cells camouflaged from immune system Cohn D. Innovations in Science 2015. www.standup2cancer.org Chen DS, et al. Immunity. 2013;39:1-10. Immunotherapy for the Future BiTE Anitbodies • Bridges a target antigen on surface of cancer cell to CD3+ on the cytotoxic T lymphocyte • Engages T cell, bypassing MHC Ag-dependent activation of T cell • T cells release proteolytic enzymes that lyse the tumor cell • BiTE Ab then moves through bloodstream targeting other cells • Activated T cells remain active Universal cancer biomarker??? • DNA methylation mark around ZNF 154 found in 15 tumor types in 13 different organs • Tumors often shed DNA into bloodstream • Advantage – no prior knowledge of the cancer required • Could be used to diagnose cancer earlier, monitor during treatment, or identify high risk patients BiTE antibodies www.amgenoncology.com, News release NIH 2016 Feb www.nih.gov Currin R. CurrinBIOTECH Newsletter. 2011;1(10) Immunotherapy for the Future TMEM (tumor microenvironment of metastasis) • • • • Research has uncovered how breast cancer spreads TMEM - 3 specific cells coming together Tumors with high TMEM score are more likely to spread New drug target – could lead to treatments to stop cancer from spreading Magic wands • Hand held probe connected to a laser that shines light onto human tissue • Can distinguish cancer cells from normal cells • Neurosurgeons testing on brain tumor patients during surgery • Trials showing the probe detects cancer cells when they are there 95/100 times Pietrangelo A. Heathline News 2015 www.healthline.com, UC Davis Comprehensive Cancer Center 2016 www.ucdavis.edu Immunotherapy for the Future IDH2 Inhibitors • IDH2 mutations have been identified in many solid tumors & hematologic malignancies • 15% of AML patients – unlikely to respond to other treatments; majority in the study had relapsed or refractory disease • IDH2 inhibitor (AG-221) – pill taken daily for AML ; ORR 56% (24 of 45 patients) with 15 CRs • Allows AML cells to develop into healthy neutrophils • SE – mostly disease-related rather than treatment-related Proteomics • Assessing proteins in the blood for cancer screening • Research ongoing in ovarian cancer, oral cancers, & lung cancer Intraoperative radiation • Single shot of radiation during surgery • Less SE & improved outcomes Mulcahy N. Medscape 2014 www.medscape.com, Crane K. US News 2014 www.health.usnews.com Immunotherapy for the Future CRISPR technology • Clustered regularly interspaced short palindromic repeats • Gene editing technique used to inactivate genes & see what happens • Can reveal which human genes are essential & which matter specifically to cancer cells • Humans have 20,000 – 25,000 genes – between 1600 & 1800 of these are essential & less likely to carry mutations • Essential genes in cell lines of 8 different cancers have been catalogued so far • Goal – find genes that are expendable in healthy cells but crucial in tumors • Not yet sure if we will find enough genes that differentiate cancer cells or if they will be targetable • Project Achilles – initiative that will use CRISPR to search for specific weaknesses in over 500 cancer cell lines Yong E. The Atlantic Nov 2015 www.theatlantic.com, CBS News Nov 2015 www.cbsnews.com Patient Case #1: PD-1 Inhibitor ED 33yo male with Hodgkins Lymphoma Apr 2011: standard chemo w/ ABVD (doxorubicin, bleomycin, vinblastine, dacarbazine) x6 cycles 2nd line chemo: GDP (gemcitabine, dexamethasone, cisplatin) 2012: autologous stem cell transplant → recurrence Salvage chemo: brentuximab vedotin (Adcetris®) Salvage chemo: GDP, MOPP (mechlorethamine, vincristine, procarbazine, prednisone), bendamustine Dec 2014: allogeneic stem cell transplant → recurrence Aug 2015: nivolumab → almost no evidence of disease Patient Case #2: CAR-T Therapy JA 3yo male with Acute Lymphocytic Leukemia (ALL) 2013 – diagnosed at age 18 months 2 year battle chemotherapy → relapsed twice Allogeneic stem cell transplant → relapse Out of treatment options other than hospice CAR-T Therapy → no evidence of disease x 9 months Strongagainstcancer.org Patient Case #3: Immunovirus SL 20yo female with tennis ball sized GBM (glioblastoma multiforme) brain tumor 2011 – surgery; 98% removed Radiation & chemotherapy (temozolamide) Recurrence 2012 → 1st patient on Phase I Polio immunovirus trial at Duke University Treatment began in May → tumor is larger by June No evidence of tumor x3 years 60 Minutes: Killing Cancer Part 1 & 2, Mar 29, 2015. Available at www.cbsnews.com Assessment Question #1 The most prevalent immune cells targeted by monoclonal antibodies to kill cancer cells are: a) Plasma cells b) T cells c) Dendritic cells d) B cells Assessment Question #2 Which of the following is a disadvantage of CAR-T therapy a) It is 30% more expensive than an allogeneic stem cell transplant b) HLA typing is needed before treatment can begin c) There are more side effects than with traditional chemotherapy d) We don’t know the long-term effects or curability of CAR-T therapy Assessment Question #3 Which of the following is a disadvantage of using viruses to kill cancer cells? a) The virus may cause a viral infection in the patient b) Immunoviruses cannot be used if the patient has received prior chemotherapy c) The virus may not reach all tumor cells if the tumor has spread throughout the body d) Healthy cells surrounding the virus-infected tumor cells become damaged by the virus Conclusions Cancer will soon be the #1 cause of death in the United States Cancer treatment is entering a new era – stimulating the patient’s own immune system to fight cancer Immune checkpoint inhibitors have demonstrated success in treating cancer patients with advanced disease CAR-T therapy is an exciting new way to target the immune system & may eventually replace allogeneic HSCT Immunoviruses are being used in innovative ways to treat cancer with some promising long-term results Technology will change how cancer is prevented, detected, and treated in amazing new ways Today’s patient cases illustrate how technology & innovations are providing new hope for cancer patients & their loved ones References United States Cancer Statistics (1999-2012). Available at: www.cdc.gov/uscs Help find a cure for childhood cancer. Available at: www.strongagainstcancer.org/science Sweeney N, et al. The value of innovation in oncology: recognizing emerging benefits over time. Boston Healthcare. May 2015 Goodman B et al. History of cancer timeline. Based on the book: The Emperor of All Maladies by Siddhartha Mukherjee. Available at: www.cancerfilms.org The History of Cancer. Available at: www.cancer.org Mills D. Researchers applaud President Obama’s plan for “moonshot” against cancer. Available at: www.healthline.com. Jan 13, 2016. Dendreon Corporation. Cancer immunotherapy: fundamental concepts and emerging role. 2013. Available at: www.dendreon.com BiTE Antibodies: designed to bridge T cells to cancer cells. 2015. Available at: www.amgenoncology.com. References Pelly S. 60 Minutes: Killing Cancer Part 1 & 2. Mar 29, 2015. Available at www.cbsnews.com Atkins MB et al. Immunotherapy in cancer: from principles to practice. Clinical Care Options slideset 2014. Bristol-Myers Squibb. Nivolumab package insert (revised 1/2016). Available at www.opdivo.com Merk. Pembrolizumab package insert (revised 12/2015). Available at www.keytruda.com Mulcahy N. PD-1 blockade arrives in hematologic cancer. American Society of Hematology 56th annual meeting, Dec 2014. Abstr 6125. Available at: www.medscape.com Mills D. Drug used in Jimmy Carter’s cancer treatment among a new generation of immune therapies. 2015 Dec. Available at www.healthline.com References Purwar R. Engineered T cells: next generation cancer immunotherapy. Slideset 2016. Park JH. CAR-modified T-Cells in adult patients with relapsed/refractory B cell ALL. Conference Correspondent. 2015 ASH Abstr 682. Ledford H. Cancer-fighting viruses near market. Nature. 2015;526:622-23. Pietrangelo A. Immune systems now a major focus of cancer treatment research. Healthline News 2015. Available at: www.healthline.com Gromeier M, et al. Targeting cancer with genetically engineered poliovirus (PVS-RIPO). 2016. Available at: www.cancer.duke.edu Cohn D. Virus Therapy. Innovations in Science 2015. Available at www.standup2cancer.org News release. NIH researchers identify striking genomic signature shared by five types of cancer. 2016 Feb. Available at: www.nih.gov References Pietrangelo A. Researchers find “doorway” that allows breast cancer to enter the bloodstream. Healthline News 2015. Available at: www.healthline.com UC Davis Comprehensive Cancer Center. Magic wands and other innovations to find cancer. 2016. Available at: www.ucdmc.edu Mulcahy N. No chemo: agent represents a new way of thinking about AML. Medscape 2014. Available at: www.medscape.com Crane K. 7 Innovations in cancer therapy. US News 2014. Available at: www.health.usnews.com Yong E. The new gene-editing technique that reveals cancer’s weaknesses. The Atlantic 2015 Nov. Available at: www.theatlantic.com CBS News. Could revolutionary gene-editing technology end cancer? 2015 Nov. Available at: www.cbsnews.com Questions [email protected]