Help Eradicate Six Cancers Caused by HPV

As a sexually transmitted disease, discussions surrounding human papillomavirus (HPV) can understandably be uncomfortable and/or embarrassing. Interestingly, according to the Centers for Disease Control and Prevention (CDC), HPV is so common that nearly ALL sexually active men and women get the virus at some point in their lives. About 79 million Americans (~25% of the U.S. population) are currently infected with some type of HPV. About 14 million people in the United States become newly infected each year. Accordingly, I thought that a more detailed blog post on the subject was warranted.

HPV is a virus with the ability to infect skin and mucous membranes, or mucosa, that lines various cavities in the body and surrounds internal organs. It can cause normal cells in infected areas to turn abnormal. Most of the time, you cannot see or feel these cell changes. In the majority of cases, the body fights off the HPV infection naturally and infected cells then go back to normal.

There are approximately 179 distinct HPV genotypes, which can be divided into “low risk” and “high risk” groups based on their capacity to drive cancer transformation. Most people with HPV never develop symptoms or health problems; 9 out of 10 HPV infections go away by themselves within two years. Sometimes HPV infections will last longer and can cause certain cancers, warts, and other diseases. There is currently no test to find out a person’s “HPV status.”

The “high risk” HPV subtypes most clearly implicated in cancer are HPV16, 18, 31, 33, 35, 45, 51, 52, and 56, which are capable of causing cancers of the cervix, head and neck, anus, vagina, vulva, and penis. Every year in the United States, HPV causes 30,700 such cancers in men and women.

Most of the time, people get HPV from having vaginal and/or anal sex with an infected partner. In fact, “genital HPV” is the most common sexually transmitted infection (STI) in the U.S.

However, the same types of HPV that infect the genital areas can also infect the mouth and throat. HPV found in the mouth and throat is called “oral HPV.” Only a few studies have looked at how people get oral HPV, and some of these studies show conflicting results. Some studies suggest that oral HPV may be passed on during oral sex (from mouth-to-genital or mouth-to-anus contact) or simply open-mouthed (“French”) kissing, others have not. The likelihood of getting HPV from kissing or having oral sex with someone who has HPV is not known. According to the CDC, more research is needed to understand exactly how people get and give oral HPV infections.

Oral HPV is about three times more common in men than in women. Overall, HPV types 2, 4, 6, 11, 13 and 32 have been associated with benign oral lesions while HPV types 16 and 18 have been associated with malignant lesions, especially in cancers of the tonsils and elsewhere in the oropharynx. The most commonly implicated subtype in oropharyngeal cancer is HPV16, accounting for over 80% of HPV positive cases. Not surprisingly, my initial biopsy results showed that tumor cells were positive for HPV16.

Patients with oral HPV cancer present at a younger age and are less likely to partake in excess alcohol consumption or heavy tobacco use that are associated with corresponding HPV-negative cancers. Additionally, HPV-related tumors more frequently arise in the oropharynx – the part of the throat at the back of the mouth behind the oral cavity. It includes the back third of the tongue, the soft palate, the side and back walls of the throat, and the tonsils (where my cancer started). Smoking-related tumors arise more commonly in the oral cavity, larynx, or hypopharynx.

Oral HPV tumors are more likely to be smaller and poorly differentiated, with a higher incidence of advanced lymph node metastases in comparison to HPV negative tumors. Despite a more aggressive clinical presentation, HPV status is the best independent predictor of survival in these patients.

Signs and symptoms of oral HPV may include persistent sore throat, earaches, hoarseness, enlarged lymph nodes, pain when swallowing, and unexplained weight loss. In my case, the first sign of disease in November 2015 was an enlarged (3-4cm) lymph node on the right side of my neck where the cancer had spread from my right tonsil. Some people have no signs or symptoms.

While there is currently no cure for the virus, there are commercially available prophylactic vaccines against HPV available today: the bivalent (HPV16 and 18) Cervarix®, the tetravalent (HPV6, 11, 16 and 18) Gardasil®, and newer Gardasil 9 (HPV6, 11, 16, 18, 31, 33, 45, 52, 58). Since the HPV subtype 16 was included in each of these vaccines, and this subtype was found in my tumor cells, it is very likely that my cancer could have been prevented had such vaccines been available to me when I was younger.

The HPV vaccine was initially developed to prevent cervical and other less common genital cancers, which raised questions regarding the ability to also prevent oral cancers. In one of the first large studies to explore the possible impact of HPV vaccination on oral HPV infections, researchers found it may confer a high degree of protection. The study of young adults in the U.S. showed that the prevalence of high-risk HPV infection was 88% lower among those who reported getting at least one vaccine dose than among those who were not vaccinated. Researchers reported the results at the recent American Society of Clinical Oncology (ASCO) 2017 annual meeting.

To be an effective preventive strategy, HPV vaccination should start before “sexual puberty.” The CDC recommends routine HPV vaccination for girls and boys at age 11 or 12 (two doses six months apart, a 2016 revision of guidelines that previously recommended three doses). People who get vaccinated later (up to age 26 for young women and up to age 21 for young men) will need three.

The same research reported at ASCO 2017 found that from 2011 through 2014 fewer than 1 in 5 (18.3%) young adults in the U.S. reported receiving at least one dose of the HPV vaccine before age 26. The vaccination rate was much lower among men than women (6.9% vs. 29.2%) at this time.

“The HPV vaccine has the potential to be one of the most significant cancer prevention tools ever developed, and it’s already reducing the world’s burden of cervical cancers,” said ASCO President-Elect Bruce E. Johnson, MD, FASCO. “The hope is that vaccination will also curb rising rates of HPV-related oral and genital cancers, which are hard to treat. This study confirms that the HPV vaccine can prevent oral HPV infections, but we know it only works if it’s used.”

More research is needed to understand exactly how people get and give oral HPV infections that resulted in my oropharyngeal cancer. Recent studies confirm that the HPV vaccine can prevent such oral HPV infections, but only when they are used – and vaccination rates are extremely low. This is disappointing, as vaccination is widely considered one of the greatest medical achievements of modern civilization. Childhood diseases that were commonplace less than a generation ago are now increasingly rare because of vaccines (although the measles are making a comeback since elimination was first documented in the U.S. in 2000). In order to be effective at eliminating communicable diseases, vaccines must be administered to sufficient levels of persons in the community.

If you have a son or daughter, please talk to your doctor about the HPV vaccine. HPV has become a recognized driver of six cancers affecting more than 30,000 people each year, yet there are available vaccines to prevent the majority (about 28,000) of these cases from ever occurring.

 

Sources:

American Cancer Society. Cancer Facts & Figures 2017. Atlanta: American Cancer Society; 2017.

From HPV-positive towards HPV-driven oropharyngeal squamous cell carcinomas. Cancer Treat Rev. 2015 Oct 31.

Centers for Disease Control and Prevention: Human Papillomavirus (HPV) Statistics

J Clin Oncol 35, 2017 (suppl; abstr 6003)

Watching the Calendar

Earlier this week, Lorie and I made our biweekly visit to the National Institutes of Health (NIH) for my infusion of the experimental agent M7824. The two day trip was uneventful and included a variety of imaging and other diagnostic tests, including an ultrasound of my spleen and a chest x-ray to monitor the pleural effusion in my left lung.

Fortunately, all of the tests came back fine and I was cleared to receive my regular infusion of M7824. As with all the previous treatments, there were no adverse reactions and we returned home later that evening.

However, with the month of July rapidly approaching, I can’t help but start to feel quite anxious. This is due to the published results from Bristol-Myers Squibb’s “CheckMate 141” phase 3 trial with Opdivo® (nivolumab), an anti-programmed death 1 (PD-1) monoclonal antibody also known as a checkpoint inhibitor. In that study, 361 patients with recurrent squamous-cell carcinoma of the head and neck (SCCHN) whose disease had progressed within 6 months after platinum-based chemotherapy were assigned, in a 2:1 ratio, to receive Opdivo every 2 weeks or standard, single-agent systemic therapy (methotrexate, docetaxel, or cetuximab). The primary end point was overall survival.

Treatment with Opdivo resulted in longer overall survival than treatment with standard, single-agent therapy. The median overall survival was 7.5 months (95% confidence interval [CI], range 5.5 months to 9.1 months) in the Opdivo group versus 5.1 months (95% CI, 4.0 months to 6.0 months) in the group that received standard therapy.

Recall from prior posts that M7824 is a completely novel, first-in-class, bispecific fusion protein of an avelumab-like, anti-PD-L1 antibody linked to two molecules of TGF-beta trap. Therefore, I always viewed M7824 as a “potentially” superior alternative to Opdivo given its added mechanism of action, hence my strong interest in participating in the M7824 clinical trial.

Assuming for a moment that M7824’s treatment effect is at least comparable to Opdivo, and considering that my disease recurred around December 2016, an expected survival of 7.5 months would translate to the July/August 2017 timeframe.

To be fair, an apples-to-apples comparison of Opdivo and M7824 isn’t possible. However, the results of Bristol-Myers Squibb’s “CheckMate 141” trial serve as a contemporary data set for checkpoint inhibitors in the treatment of recurrent SCCHN and are definitely something that I keep my eye on.

Lorie and Michael Becker enjoying ice cream in Bethesda, MD

Barring any surprises, I’ll continue biweekly treatment with M7824 and then repeat imaging in July to see whether or not my disease has progressed. In the meantime, I’ll continue to savor simple moments like enjoying ice cream on a warm summer evening with my wife (see photo).

Roller Coaster

It’s been a couple of weeks since my last clinical post, so I wanted to provide an update following this week’s NIH appointments.

Michael Becker pleural effusion

Xray images of Michael Becker’s chest showing pleural effusion both before and after drainage

First, surgical insertion of my Aspira® drainage system has dramatically improved the pleural effusion in my left lung. It’s essentially a chest tube/catheter that allows me to drain the fluid buildup on an as-needed basis into drainage bags at home. The image to the right shows before and after chest x-ray images that demonstrate just how blocked my left lung was before being drained (nearly 2/3 blocked). It also shows how my left lung is now “close” to normal following drainage.

Second, I’ve been on prednisone (steroid) to help “sculpt” the inflammatory response, which is also helping keep the fluid from building up so quickly in my left lung. Whereas I was emptying 100 mL or more on a daily basis previously, I am now only draining 15-20 mL every other day or so.

Now that the pleural effusion can be managed, attention returned to whether or not to resume treatment with M7824, a completely novel, first-in-class, bispecific fusion protein (see prior posts for more details). My last infusion of M7824 was several weeks ago.

Following another CT scan and constructive discussion with the NIH team, we came to the conclusion that there is essentially a tug-of-war occurring between the cancer in my lungs and my body’s immune system, the latter of which appears to be benefiting from M7824. The hope is that eventually M7824 will tip the scale in favor of my body’s immune system and control the cancer.

Michael D. Becker receiving IV infusion with M7824 – a novel, first-in-class, bispecific fusion protein on May 16, 2017

Accordingly, the decision was made to keep moving forward with M7824 and I received an infusion on Tuesday, May 16, 2017. As with past administrations, there were no issues and I returned home to Pennsylvania with Lorie later that evening.

The pleural effusion will be monitored closely and managed via the catheter and steroids. As long as there are no major issues in terms of fluid in my lung, I will continue to receive an infusion of M7824 every other week. A repeat CT scan will be done in a month or so to reassess the situation.

Memoir Published

Well, gulp! My memoir is finally done and published.

Memoir book cover – “A Walk With Purpose” by Michael D. Becker

A Walk With Purpose chronicles my career path from an investment advisor to chief executive officer of an oncology-focused biotechnology company, and finally into a terminal cancer patient confronting his own mortality. It is a memoir about both my life and illness, battling stage 4 head and neck cancer.

Both paperback & digital copies available via Amazon:

To visit the Amazon ordering page, please click here

PS – Good, bad, or indifferent, if you have read the book please do take a moment to leave an honest review on Amazon

Honestly, Not Such a Good Friday

This past Wednesday, I had a thoracentesis procedure in which a needle was inserted into the pleural space between my lungs and chest wall. This procedure was done to remove excess fluid, known as a pleural effusion, from the pleural space to help me breathe easier.

Michael Becker blogging from his laptop at NIH on April 15, 2017

During the procedure, Dr. Elliot Levy, an interventional radiologists at NIH trained in radiology and minimally invasive procedures, drained 1.5 liters from the pleural space. Almost immediately, I felt better and even while I was being wheeled back to my recovery room, I asked my wife Lorie to grab me a turkey sandwich from the cafeteria as I was quite hungry. It’s possible the large amount of fluid on my left side was putting some pressure on my stomach, which could help explain why I haven’t had much of an appetite lately.

By Thursday, however, the fluid was returning, prompting yet another thoracentesis procedure on Friday to remove 1.5 liters of fluid. The rapid nature of the fluid buildup means that I will most likely have an Aspira® drainage system surgically installed to conveniently let me drain the fluid buildup at home via a small catheter and drainage bags. That procedure is planned for Monday, so I have been staying at NIH since Wednesday and will be here over the weekend.

More importantly, however, a CT scan was also done on Friday morning with disappointing results. The cancer nodules grew since the last CT scan on March 7, 2017. This reflects true disease progression as opposed to “pseudo-progression” as discussed in a prior post. I have been taken off the clinical study with M7824.

My individual results do not reflect poorly on the future of M7824, but rather underscore that we still have a lot to learn about immunotherapy and cancer. While I may not have benefited from the drug, the resulting knowledge and clinical data may help guide future development and I am proud to play a part in that process.

At this point, if I received no further treatment and went on hospice, my likely survival would be about two months – although every patient is different. I have scheduled an appointment with my oncologist at MSKCC to discuss the pros and cons of chemotherapy at this stage, but the balance between quality of life and quantity of life is not trivial and I haven’t made a firm decision to go in this direction. Chemotherapy may only add a month or two of survival with a negative impact on my quality of life.

While I have been very open about my disease since originally being diagnosed in December 2015 and enjoy blogging, I will now be focusing much more time with my wife and daughters and finishing up my memoir, which I hope to have published. This will unfortunately mean less time for updating this blog and responding to emails.

Thank you to everyone who has offered their best wishes, thoughts, and prayers during my cancer journey. Having such an amazing support network of family, friends, and social media contacts has been a great source of strength and inspiration. Special thanks to my wife, Lorie, who has been by my side the entire time.

If you’ll indulge me, I would like to end this post with three requests:

  1. If you have a son or daughter, please talk to your doctor about the HPV vaccine, which protects against cancer of the cervix, vagina, and vulva in women; penis in men; and cancers of the anus and head/neck (including the base of the tongue and tonsils) in both men and women. HPV is a very common virus; nearly 80 million people are currently infected in the United States. About 14 million people, including teens, become infected with HPV each year, resulting in 30,700 cancers in men and women. HPV vaccination can prevent most of the cancers (about 28,000) from occurring.
  2. Help preserve federal funding levels by communicating with lawmakers about the critical importance of investing in medical research. There are far too many people suffering from cancer and this is not the time to cut the budget for the National Institutes of Health (NIH) by 18.3 percent, about $5.8 billion, as has been proposed. In an Op Ed by Harold Varmus appearing in the New York Times on March 22, 2017, he states that  only about 10 percent of the NIH’s budget supports the work of government scientists and that “over 80 percent of its resources are devoted to competitively reviewed biomedical research projects, training programs and science centers, affecting nearly every district in the country.” Harold Varmus, a professor at Weill Cornell Medicine and a co-recipient of the 1989 Nobel Prize in Physiology or Medicine, was the director of the National Institutes of Health from 1993 to 1999 and of the National Cancer Institute from 2010 to 2015.
  3. If you or someone you know is battling cancer or another disease, please talk to a physician about available clinical trial options. Clinical trials are a key research tool for advancing medical knowledge and patient care. Such trials are important to learn whether or not a new approach works well in people and is safe and which treatments or strategies work best for certain illnesses or groups of people.

Time to Drain the Swamp

Draining the swamp is a metaphor used by American politicians, referencing actions to clean up government corruption. In my case, however, I’m referring to a treatment that involves draining the fluid from my chest cavity, either with a needle or a small tube inserted into the chest. This will treat my pleural effusion, also called “water on the lung,” which is an excessive buildup of fluid in the space between my lungs and chest cavity (see diagram).

Diagram showing a pleural effusion

The pleural effusion is likely the source of my coughing, shortness of breath, and other recent symptoms. I haven’t been feeling well at all lately, but once it is drained – I should feel much better.

Thin membranes, called pleura, cover the outside of the lungs and the inside of the chest cavity. There’s always a small amount of liquid within this lining to help lubricate the lungs as they expand within the chest during breathing. Certain medical conditions, such as malignancy, can cause a pleural effusion, which is likely my situation. The excess fluid prevents the lung from expanding normally.

Sometime this morning I will have the procedure and hope to provide updates when I am awake later on.

I may need this treatment more than once if fluid re-collects, but we’ll cross that bridge another time.

 

Keeping the Faith with M7824

As evidenced by the extensive discussions following my biopsy from last Friday, a tumor is indeed a very complex structure. It comprises cancer cells and stromal cells, tumor infiltrating cells—both cells of the immune system and cells not by convention being of the immune system, as well as an extracellular matrix mainly of proteins and carbohydrates.

Following my recent CT scan, the hope from obtaining core biopsies from one of my lung nodules was to get a better sense of the cancer at a cellular level, which may help shed some light on whether or not treatment with M7824, a completely novel, first-in-class, bispecific fusion protein is working (see prior posts for more details).

In particular, the presence of immune system cells (T cells, or T lymphocytes) in tumor biopsies and their potential impact on prognosis have been studied for decades. T cells are a type of white blood cell that circulate around our bodies, scanning for cellular abnormalities and infections. Broadly speaking they can be divided into two different types, “killer” CD8-positive T-cells and “helper” CD4-positive T-cells. CD8-positive T cells are critical mediators of adaptive immunity. They include cytotoxic T cells, which are important for killing cancerous or virally infected cells, and CD8-positive suppressor T cells, which restrain certain types of immune response.

Despite contributions by other immune cell subsets, CD8-positive T cells have emerged as the predominant effector in most cancer immunotherapy settings¹. Accordingly, many immunotherapeutic strategies (including checkpoint inhibitors, such as anti-CTLA4, PD1, and PD-L1 antibodies) are dedicated to stimulating, enhancing and maintaining responses by tumor-reactive CD8-positive T-cells.

Favorable outcomes have been demonstrated in patients where high numbers of CD8-positive cells were found at the tumor site in patients with head and neck cancer, breast, colorectal cancer and also for others solid cancers. In one study, head and neck cancer patients whose tumors were densely infiltrated by CD3-positive and CD8-positive T cells had a significantly longer overall survival (OS) and progression-free survival (PFS) compared with patients whose tumors were poorly infiltrated².

While there seems to be a consensus that CD8 infiltration is a good prognostic marker in most malignancies analyzed, however, the impact of CD8-positive T cells on clinical outcome may differ and is difficult to quantify. Not only is the type of T cell important, but also its location, and moreover the specific phenotype and function of those cells in the particular environment.

Nonetheless, based on the preliminary results from my recent tumor biopsy and other factors, it appears that there is sufficient evidence of immune system activation in the vicinity of the tumor to indicate that the experimental agent M7824 may indeed be performing as we hoped. Accordingly, I am in 100% agreement with my doctor’s recommendation to continue on the therapy and will receive my next infusion this coming Tuesday at NIH. After a few more cycles of therapy, another CT scan will be taken in the future with the hope of demonstrating that the recent tumor growth was from treatment effect “pseudo-progression” rather than true disease progression, which has been previously described with immune checkpoint inhibitors like M7824.

References:

¹ Targeting CD8+ T-cell tolerance for cancer immunotherapy. Stephanie R Jackson, Jinyun Yuan, and Ryan M Teague. Immunotherapy. 2014 Jul; 6(7): 833–852.

² Tumour-infiltrating lymphocytes predict response to definitive chemoradiotherapy in head and neck cancer. P Balermpas, Y Michel, J Wagenblast, O Seitz, C Weiss, F Rödel, C Rödel and E Fokas. British Journal of Cancer (2014) 110, 501–509. doi:10.1038/bjc.2013.640