In past years, the rate of colorectal cancer (CRC) has become a serious public health problem in Mississippi. A study conducted in 2020 showed that Mississippi had one of the highest mortality rates from CRC as well as one of the CRC lowest screening rates between 2015 and 2019. The state also leads the nation in cardiovascular disease mortality rates as well as diabetes mortality. These are both known comorbidities for many types of cancers, including CRC. 

One theory as to why the screening rates are so low in Mississippi is that about 55% of the state’s population resides in rural locations, which may make it hard for some individuals to access regular medical care. The rural population in Mississippi has a high rate of uninsured individuals making it hard for this population to afford regular screenings. In 2016, 14% of the population under 65 were uninsured. 

Another theory as to why CRC rates are so prevalent in Mississippi is that the diet of many of the residents is high in red meat and low in fiber. This is in part due to a culture that relies on red meat and processed foods. This diet is also more prevalent in areas that have a low socioeconomic background, as it can be difficult to obtain healthy food if one lives in a food desert. 

Colorectal cancer-related mortality in those over 50 (2014-2018).
Data source: https://statecancerprofiles.cancer.gov/map/map.noimage.php.

Fortunately, the Mississippi government recognized the issue and has developed a plan to help increase the screening rate of residents in Mississippi and decrease mortality rates 70X2020 was initiated in 2014. Since the start of the program, there has been an increase in individuals who got screened, specifically in minority communities. So far, screening rates have improved from 55% in 2014 to 69.9% in 2020. For white individuals there was a compliance rate of just under 70% and for black individuals there was a compliance rate of just above 70% in 2020. 

From this case study, we are able to theorize that screening and diet play a crucial role in the development of CRC. We are also able to see that there is a strong correlation between screening rates and CRC mortality rates. 

A study published in the Journal of Medical Economics simulating a cohort of one million Medicare patientsUS adults aged 65 years and olderwith average risk of colorectal cancer, investigated the cost-effectiveness of non-invasive fecal tests (fecal immunochemical test (FIT), fecal occult blood test (FOBT), and multi target stool DNA test (mt-sDNA)). The researchers used the Colorectal Cancer and Adenoma Incidence and Mortality Microsimulation Model (CRC-AIM) with test-specific adherence data to estimate the cost-effectiveness of the various options.

Assuming 100% adherence follow-up colonoscopies and using real-world screening adherence data, the researchers found that mt-sDNA was cost-effective when compared to FOBT but not FIT. Cost-effectiveness was defined at the $100,000/quality adjusted life-year (QALY) threshold. 

  •     $62, 814/QALY when compared to FIT
  •   $39,171/QALY when compared to FOBT

The assumption of100% adherence to follow-up colonoscopies is not a significant limitation to this study because this is just one scenario and also because follow-up colonoscopies are covered under Medicare. Since follow-up colonoscopies are covered under Medicare there is not a financial disincentive to get a colonoscopy and therefore most people under Medicare do get the colonoscopy.  Moreover, when the authors ran the model using real-world follow up-colonoscopy and screening adherence rates, they found that mt-sDNA was even more cost-effective:

  •   $31,725/QALY when compared to FIT
  •   $28,465/QALY when compared to FOBT

Generally an incremental cost-effectiveness ratio (ICER) of less than $100,000 is considered good value, and those under $61,000/QALY is considered cost-effective. Therefore, when real-world adherence rates were considered, mt-sDNA was the more cost-effective option compared to both FIT and FOBT and resulted in greater reductions in CRC incidence and mortality.

Cost-effectiveness analyses are important for determining which screening test performs better than the others, and where to relocate resources to achieve the best health outcomes for the lowest possible cost. These types of studies on Medicare populations are important because they help policy makers make informed decisions on resource allocation.

 

Gargi Patel is a Colon Cancer Prevention Intern with the Colon Cancer Foundation.

In 2013, The Bourbon Mafia was formed when a group of bourbon enthusiasts and industry professionals came together in their search for rare bourbon. About a year in, they realized that they could utilize their platform to raise money for causes that are near and dear to their hearts. With 42 members spanning 11 U.S. states, and two members in Australia, the organization has raised approximately $150,000 since 2014  for various charities, including the Colon Cancer Foundation (CCF). The Bourbon Mafia raises money through events, including bourbon raffles, dinners, and bottle auctions.

Brian Gelfo, one of the founding members and the  treasurer and secretary of the Bourbon Mafia, spoke with the Colon Cancer Foundation about their organization’s motivation for donating to CCF. Omar Marshall was one of the first classes brought into The Bourbon Mafia. Following his diagnosis of colorectal cancer (CRC) in 2020, he and his wife, Pam Marshall, decided they wanted to raise awareness around this disease. The initial goal of The Bourbon Mafia was to donate in his honor while Omar was still with them. Unfortunately, Omar lost his battle with CRC on January 18, 2021.

Robert Diaz (second from left) receiving a donation from The Bourbon Mafia on behalf of the Colon Cancer Foundation.

Nevertheless, a $30,000 donation was made to CCF in April 2021. Before Omar passed, he participated in a selection of a Four Roses Bourbon barrel that would be used for the donation. Mr. Gelfo highlighted an impactful statement by Robert Diaz who represented CCF at the engagement event: “This $30,000 donation can fund 1,000 colon cancer screenings.” Members of The Bourbon Mafia were gratified that their efforts could impact the lives of a thousand people. “Even if one finds out early and gets treated, it’s well worth it,” Mr. Gelfo said. 

According to Mr. Gelfo, many members in the bourbon industry, including fans and supporters, are predominantly older men. Through these events, The Bourbon Mafia hopes to raise awareness in the community for them to get screened.

This year, their event was held on 25th February, 2022, in Louisville, Kentucky, where they expected to raise a minimum of $10,000. Barrels will be hand selected from Starlight Distillery and guests will receive a sample of bourbon, a beer, and a bottle of bourbon to take home. Silent auction items will be donated by Mrs. Marshall and the family as well as other distilleries.

Mr. Marshall was buried on the farm under an oak tree from where he can watch over the farm, as he always wanted to. Mrs. Marshall emphasized the importance of early detection and being proactive for any type of cancer. “The Bourbon Mafia and bourbon itself has brought me into contact with so many wonderful people who share the same passion for bourbon and helping others,” she said.

 

Kenadi Kaewmanaprasert is an intern with the Colon Cancer Foundation.

We learn time and again that prevention is the best medicine, and this holds true for colorectal cancer (CRC). It is estimated that 50% of CRC cases can be prevented with diet and lifestyle modifications. Previous studies that looked at the relationship between CRC development and nutrition concluded that there is a strong correlation between diet and the development of certain types of cancer, specifically CRC. 

A recent study published in Preventive Medicine Reports investigated the impact that an insufficient diet plays in the development and prevalence of certain cancers as well as the effect that race and ethnicity has on diet.  Wholegrains, dietary fiber, non-starchy fruits, and vegetables, dairy products, milk, cheese, dietary calcium, coffee, and calcium supplements were found to be associated with preventing cancer development. The study examined population attributable factors and the number of excessive cases diagnosed in Texas in 2015 that were attributed to an inadequate diet, defined as a diet that does not meet or conform to the national or global dietary recommendations. 

With a diverse study population, the researchers had the opportunity to explore how race and ethnicity play into diet and thus contribute to the prevalence of cancers, specifically colorectal cancer (CRC).  

The study found:

  • While men were more likely than women to not follow guidelines on red and processed meat consumption.
  • Women were more likely to miss dietary recommendations on fiber and calcium intake.
  • A significant correlation between processed meats consumption and the prevalence of CRC and a connection between red meat consumption and the prevalence of CRC. 

There has been additional research conducted to show that there is a link between dietary fiber intake, and dietary calcium intake and the prevention of CRC. Looking at the racial and ethnic difference the study found that Non-Hispanic Whites consumed higher than the recommended dietary intake of red and processed meats. While it was found that Non-Hispanic Blacks were the most likely to have insufficient fiber and calcium intake.

In the Texas population, the authors found:

  • 3.3% of all new cancers (>3,428) could be attributed to an inadequate diet 
  • 34% of new CRC cases can be attributed to dietary insufficiencies 

The authors describe a similar correlation identified in an Australian population, where:

  • 17.6% of CRCs were related to an insufficient fiber level in diet 
  • 17.7% of CRCs were attributed to red and processed meats 
  • Men had a higher proportion of cancers attributable to an insufficient diet than women 
  • Excess consumption of processed meat contributed to 1,002 new cancer cases and red meat consumption contributed to 379 additional cancer cases 

This study along with multiple other studies conducted in relation to dietary factors and their contribution to cancer highlight the importance of dietespecially insufficient fiber intake and excess red or processed meat intakeon overall cancer burden.

 

Abigail Parker is a Colon Cancer Prevention Intern with the Colon Cancer Foundation.

Immunotherapy aids your immune system to fight off cancer. There are five types of immunotherapy: treatment vaccines, immune checkpoint inhibitors, T-cell transfer therapy, monoclonal antibodies, and immune system modulators. While there have been no treatment vaccines approved for colorectal cancer (CRC) yet, BioNTech’s mRNA-based treatment vaccine has recently reached phase 2 clinical trials for CRC. The vaccine, individualized to each patient, is being developed as a treatment for CRC as well as to prevent relapse in those who have undergone CRC surgery. 

How Does Immunotherapy Work?

The immune system is built to detect and destroy abnormal/mutated cells. Tumor-infiltrating lymphocytes are often found around tumors and they are an indication that the immune system is working to eliminate the tumor. Cancer cells typically undergo genetic changes that allow them to escape the immune system—they often have proteins on their surface that inactivate immune cells, and they can even change cells surrounding them to interfere with the immune system. Therefore, a therapy that can train the immune system to identify and destroy cancer cells capable of defying the immune system is important.

Cancer Treatment Vaccines

Cancer treatment vaccines are designed for people who already have cancer, and trains their body’s immune system to find well-hidden cancer cells. These vaccines can be made in three different ways. 

  1. From the patient’s own cancer cells to cause an immune response against features that are unique to their cancer.
  2. From tumor-associated antigens that are found on cancer cells. These are made for cancer subtypes.
  3. From dendritic cells, which are a type of immune cell that respond to an antigen on tumor cells. This type of a vaccine is already being used for treating prostate cancer.

Matias Riihimäki et al. in their 2016 epidemiologic study published in Scientific Reports found that up to 18% of all CRC patients have recurrence and up to 25% have metastasis. A treatment vaccine would be able to help prevent recurrence and help patients with metastasis suppress small tumors that are often difficult to remove surgically.

BioNTech Chief Medical Officer and Co-founder Özlem Türeci, M.D., noted in a press release, “This trial is an important milestone in our efforts to bringing individualized immunotherapies to patients. Many cancers progress in such a way that the patient initially appears tumor-free after surgery, but after some time tumor foci that were initially invisible grow and form metastases. In this clinical trial in patients with colorectal cancer, we aim to identify high-risk patients with a blood test and investigate whether an individualized mRNA vaccine can prevent such relapses.”

Gargi Patel is a Colon Cancer Prevention Intern at the Colon Cancer Foundation.

The COVID-19 pandemic has affected nearly every aspect of life from schools to offices and, most importantly, healthcare. While certain things may have gone back to normal, the healthcare space continues to struggle. During a discussion at the National Colorectal Cancer Roundtable (NCCRT) Annual Meeting, panelists shared how their respective organizations  adapted to the pandemic to ensure continued delivery of colorectal cancer (CRC) screening.

Rachel Issaka from the Fred Hutchinson Cancer Research Center kicked off the discussion with the history of the COVID-19 pandemic in the U.S., starting with when the SARS-CoV-2 virus reached the U.S and the government declared a national emergency on March 13th, 2020, due to the rapid spread of the virus. A day later, on March 14th, the office of the U.S. Surgeon General advised hospitals to reschedule all elective procedures. Subsequently, the Gastroenterology Society released a statement that recommended all endoscopies and clinical practices be rescheduled along with other non-urgent procedures and the Centers for Disease Control & Prevention (CDC) recommended that healthcare systems prioritize urgent visits and delay elective care. The American Cancer Society (ACS) advised patients to postpone elective care, including cancer screenings, if they are at average risk for cancer and did not have any signs or symptoms. 

Following these recommendations, many adults delayed or avoided medical care. A study conducted in June 2020 by the CDC found that:

  • 41% of U.S. adults had delayed or avoided treatment
  • 12% had avoided urgent and emergency care 
  • 32% avoided routine care

Another study conducted in April 2020 found that cancer diagnoses decreased by 46% as compared to the year before, and CRC diagnoses dropped by 49%. The primary cause for this drop in diagnoses was delayed screenings for individuals who had symptoms but did not want to use the healthcare system during the pandemic. CRC screenings were down 25% between March of 2020 and March of 2021. It is estimated that these delays in screening and diagnoses will be responsible for an additional 4,500 deaths from CRC by the year 2030. 

Fortunately, organizations such as the Lincoln Community Health System in Newport, Oregon, recognized this growing gap in screening and diagnosis of CRC and came up with solutions. Jaraka Carver, LPN, from Lincoln Community Health Center, who was planning on running a CRC awareness campaign in March 2020, witnessed the project being derailed by the pandemic. Instead, after seeing the growing gap in CRC diagnosis she and her team implemented a bi-annual FIT mailing program to reach out to individuals and remind them that they were overdue for a CRC screening, and then sent them an at-home FIT test. Of the kits that were sent out:

  • 33.5% came back for testing, of which 15 came back as abnormal 
  • 30 individuals were referred for colonoscopies, 20 of whom completed the colonoscopy and 1 was diagnosed with cancer 

Virginia Mason Franciscan Health in the Pacific Northwest was also looking to increase CRC screenings among their constituents. Their divisional vice president, Michael Anderson, had partnered with ACS on a program to increase CRC screenings to 70%. However, once the pandemic hit, they had to change directions. With the goal of scheduling annual wellness visits during the pandemic, they specifically focused on vulnerable populations and clearly communicated Medicare’s new rule that a patient could complete a visit in person, online, or by phone. 

The organization also began reaching out to patients who were overdue for an annual visit and implemented a digital tool that helped prioritize patients by their likelihood of completing a CRC screening test. The program had a 40% success rate: they scheduled 5,300 annual wellness visits, completed 1,325 cancer screenings, and saved nearly 8.16 years of life. On a population level, this program allowed 41 more men and women to spend an extra year of life with their friends and family because they were screened for CRC. 

The panel concluded with a question and answer session where participants were able to ask the presenters questions regarding the effects of SARS-CoV-2 on CRC screenings. This meeting stressed the importance of annual screenings as well as the importance of adapting to different situations and needs, with a focus on ensuring that patients are able to achieve the best health outcome possible. 

 

*Additional Information on the NCCRT annual meeting can be found at 2021 80% in Every Community Conference & NCCRT Annual Meeting – National Colorectal Cancer Roundtable  

Presenters slides can be downloaded using this link https://nccrt.org/download/101349/ 

 

Abigail Parker is a Colon Cancer Prevention Intern with the Colon Cancer Foundation.

Slow-transit constipation (STC) is reported to occur in 15-30% of people in the U.S. The most widely accepted definition of STC is two or fewer bowel movements per week or straining at stool more than 25% of the time. Research continues to point to STC as a risk factor for colorectal cancer (CRC).

A study published in 2020 that looked at 2,165 patients (median age 54 years), found that the cumulative probability of CRC was 0.2% 5 years after STC diagnosis and 0.4% 10 years after STC diagnosis. This was not significantly different (p=0.575) than among those without STC diagnosis. However, this may be due to the small number of patients (5) who were diagnosed with CRC.

Although the authors of the 2020 study did not find a significant difference among those with and without STC diagnosis, it is well established that STC increases CRC risk. Gurérin et al. in their 2014 study of over 100,000 patients identified a statistically significant risk of CRC among those with STC:

  • 56% higher for CRC
  • 260% higher for benign neoplasm
  • 256% higher for benign neoplasm in colon
  • 262% higher for anal and rectal polyps

Current management options for STC range from dietary counseling, pharmacological therapy, and surgery. 

While the etiology of STC remains unclear, there is increasing evidence that it is caused by an imbalance in the gut microbiome. Zhang et al. in their 2021 review published in Gastroenterology Report found that gut microbiota may play a major role in modulating colonic motility, secretion, and absorption. However, there is still much research needed to understand how the gut microbiome modulates movement of fecal matter through the small intestine and colon.

Conversations about the role of the gut microbiome in CRC development were a part of the Early-Age Onset Colorectal Cancer Summit held by the Colon Cancer Foundation in May 2022.

 

Gargi Patel is a Colon Cancer Prevention Intern with the Colon Cancer Foundation.

 

Recently at the American College of Gastroenterology’s 2021 Annual Scientific Meeting, Dr. Hee Cheol Kim, Professor of Surgery at Samsung Medical Center in  Seoul, South Korea, presented an abstract detailing results from a study on Guardant Health’s LUNAR-2 blood test for colorectal cancer (CRC). It was found that the test had a sensitivity (percent of CRC patients identified as having CRC) of 96%  and a specificity (percent of patients without CRC as not having CRC) of 94%.

LUNAR-2 is a multimodal circulating tumor DNA (ctDNA) blood test. ctDNA is the tiny amount of DNA from cancer cells that moves freely in the bloodstream and can be used as a biomarker for cancer diagnosis. Tests for ctDNA are often very sensitive to the smallest amount of tumor DNA and can catch cancer much earlier than physical screening tests such as a colonoscopy.

The efficacy of LUNAR-2 as a CRC screening test was evaluated retrospectively in a cohort of 699 patients with stage 1, 2, or 3 disease. Furthermore, LUNAR-2 was able to identify 90% of asymptomatic patients. This is significant because early detection is strongly associated with improved survival. 

Currently, a larger trial with more than 10,000 patients is underway (ECLIPSE study) to further test whether LUNAR-2 is able to diagnose early-stage CRC. Enrollment is expected to be completed later this year.

It is important to have a less invasive and simpler test for CRC screening because of the challenges in adherence to timely screening. Colonoscopy, which is recommended once in 10 years, requires general anesthesia and is considered a medical procedure. Additionally, colonoscopy can be expensive. Stool-based screening tests, such as a FIT test or a FIT-DNA test, have to be done frequently and many people feel uncomfortable getting them done.

Guardant Health Co-CEO AmirAli Talasaz explains in the company press release why a blood test is critical right now, in a post-COVID world. “During the COVID-19 pandemic, screening rates have dropped, wellness visits have declined, and postponements of non-emergency medical procedures have made it harder for people to complete life-saving CRC screening. The study results show that the LUNAR-2 test could provide both patients and physicians with an easy-to-use and highly accurate CRC screening alternative in the form of a blood test.”

 

Did you know that the incidence and mortality rates of early-age onset colorectal cancer (EAO-CRC) have skyrocketed in recent years? Many of these patients may not have been screened yet for CRC, and may be misdiagnosed with another gastrointestinal condition. A lack of awareness of EAO-CRC combined with the potential for misdiagnosis and myriad other factors has contributed to patients under the age of 55 being 58% more likely to be diagnosed with advanced CRC than their older counterparts. While individuals with a known family health history of CRC may be more likely to get screened at a younger age, 70% of EAO-CRC cases occur in individuals with no known risk factors, who, therefore, may not have any knowledge of CRC symptoms and may not be inclined to consult a doctor if symptoms arise. 

The rapid rise in EAO-CRC cases makes it vital for primary care physicians to be acutely aware of CRC symptoms (e.g. rectal bleeding and abdominal pain), and not hesitate to refer patients to get screened even if they do not have a family history of the disease or are young. CRC is largely treatable if diagnosed at a localized stage, so it is imperative that patients are made aware of the symptoms and that physicians respond to their concerns appropriately. To learn more about what you can do to combat the rise of EAO-CRC, please take a look at the infographic below.

Final Clinical Alert Infographic Download

 

 

It is finally here! The U.S. Preventive Services Task Force (USPSTF)’s final recommendation has lowered the colorectal cancer (CRC) screening age for average-risk adults from 50 to 45 years. This long-awaited final recommendation came a little over six months after the draft recommendation was released in October last year.

This is a B grade recommendation, meaning that there is high certainty that the net benefit is moderate or there is moderate certainty that the net benefit is moderate to substantial. Screening for 50–75-year-old adults remains an A grade recommendation, meaning USPSTF believes there is high certainty of substantial net benefit with screening that age group. The recommendations have also been published in JAMA.

Lowering the screening age from 50 to 45 years is great news for the CRC community because it will significantly influence the earlier diagnosis of CRC among the younger age group. To bring this into perspective, a recent paper in JAMA Network Openprojected that by 2040, CRC will be the second most common cancer in the 20-49 age group and it will be the leading cause of cancer-related deaths in that age group.

Ana Acuna-Villaorduna, MD, Department of Medical Oncology at Montefiore Health System, believes that the lowering of screening age could halt the alarming rise in early-age onset CRC, particularly among racial and ethnic minority populations. “Considering US-based population projections that foresee a continuous increase in racial/ethnic minorities and have higher frequencies and worse clinical courses of colorectal cancer among young patients, it is necessary to adopt a screening strategy aimed to halt this alarming trend,” Dr. Acuna-Villaorduna wrote in an email.

She believes that general practitioners and family physicians will be strategic players in implementing the new measures by educating patients in the community, along with gastroenterologists and medical oncologists. However, uptake of these recommendations by the primary care clinical community may be slow, depending on the messaging strategies that are utilized.

“As usual, it will take a while to get the message out,” Zuri A. Murrell, MD, FASCRS, Chair, Cancer Committee, Samuel Oschin Comprehensive Cancer Institute, Cedars-Sinai Medical Center, told the Colon Cancer Foundation. “Having a media blitz will be helpful. Organizations like the American Cancer Society and the Colon Cancer Foundation will be the main people who will not only get the word out to providers, but to the community as well,” he added.

Dr. Acuna-Villaorduna thinks that the USPSTF recommendation will finally build a consensus across the various medical societies that have disparate CRC screening recommendations. She believes that some physicians may already have been screening average-risk adults at 45 years, so guideline uptake may be faster.

What Else Will Influence Uptake of the Guidance?

Another important question is whether our health care system has the capacity to onboard the 20-21 million adults in the 45-49 age group who are now eligible to get screened. While colonoscopy remains the gold standard, other screening options, including stool-based testing, could be used to conduct the initial screen. Whitney Jones, MD, Founder, Colon Cancer Prevention project, agrees. “While we cannot conduct colonoscopy in all the new population, we can definitely send them stool-based testing kits. That’s what health systems should focus on,” he said while speaking with the Colon Cancer Foundation.

The other issue is insurance coverage for CRC screening as a preventive care service for the 45-49 age group and making sure payers—both government and private—are aware of the updated guidelines and are integrating these within their policy.

Currently, most insurers will cover the cost of a preventive screening test for those 50 years or older, but the enrollee may have to share the cost of a diagnostic screening test if a polyp or tumor is found.

If historical trends are any indication, insurance coverage of colonoscopy will significantly influence increased screening in the younger age group. Evidence for this is stark in the Medicare population: colonoscopy rates jumped from 20% in 2000 to 61% in 2018 among those 50 and older after Medicare started covering colonoscopy screening for all beneficiaries in 2001.

Once the updated recommendations of CRC screening age are implemented, Dr. Murrell is hopeful that insurance companies will listen and hopefully start covering the cost of the simple preventive procedure. He also raised an important point about eliminating fear from the mind of the younger community. “I have coined a slogan that I always share with my patients: ‘You shouldn’t die from fear you shouldn’t die from embarrassment.’ This will be the first step in helping and encouraging people to get a colonoscopy,” he added.