Biomarkers for Colorectal Cancer

Posted on March 11, 2026 by Patrick Hercules

Colorectal cancer is a cancer that starts in the colon or the rectum. It is the second most common type of cancer among men and women, and the second most common cause of cancer-related deaths.

Colorectal cancer most commonly occurs in men and women 55-85 years of age, which is 80% of colorectal cancer cases. Common risk factors of the disease include:

Obesity

Having type 2 diabetes

Family history

Racial and ethnic background

Diet

Level of physical activity

Long term tobacco smoking

Moderate to heavy alcohol use

If a person is suspected of having colorectal cancer or has already been diagnosed with it, they will be tested for colorectal cancer biomarkers.

Biomarkers or biological biomarkers are traits that healthcare providers measure in a person’s blood, body fluids, and tissues. They can be signs of conditions, diseases, normal body functions, or when something goes wrong. Biomarkers can also be used by healthcare providers to see how well a person’s body reacts to treatments for the disease they have.

Biomarkers for colorectal cancer are used for diagnosis, progression, prognosis, and treatment planning. Diagnostic biomarkers can detect the presence of diseases. Prognostic biomarkers are associated with a clinical outcome regardless of the treatment that has been received, and predictive biomarkers can predict the benefit or lack of benefit of a certain treatment.

Colorectal cancer biomarker testing is done by taking a sample of a person’s tumor for a biopsy, or a sample of their blood and sending it to a pathology lab to determine if there are any abnormalities in the DNA, RNA, hormones, or proteins made by their cancer. Many tests are used in biomarker testing, including:

DNA or RNA sequencing

Next-generation sequencing

Molecular testing

CtDNA

Immunohistochemistry

FISH

Biomarker testing can reveal very detailed information about a person’s tumor. A healthcare provider will review the test results to determine which of the specific biomarkers are present, and they may also see how much is present. The type of biomarker tests a person receives depends on what their healthcare provider determines is right for the type and stage of cancer they have.

Biomarkers can also determine if the person’s colorectal cancer has a hereditary genetic mutation or an acquired one. Only 5% of colorectal cancer cases are caused by germline mutations, also known as hereditary mutations, which are genetic abnormalities that are passed down from parent to child. This means that 95% of colorectal cancers happen randomly due to changes in the body cells that weren’t inherited.

Once colorectal cancer biomarker testing is complete, a healthcare provider will be able to create a personalized treatment plan based on the person’s unique biomarker traits.

Biomarker testing is useful in both early and advanced colorectal cancer. For those with advanced cancer, biomarker testing is used to learn whether their cancer has any targetable characteristics. If it does, target therapy or immunotherapy may be treatment options as they target specific characteristics of a tumor.

If you would like to learn more about colorectal cancer biomarker testing, or to learn more about our cancer care program, you can schedule an appointment with an oncologist at our MediSys Health Network Cancer Center by calling (718) 206-6742.

All content of this newsletter is intended for general information purposes only and is not intended or implied to be a substitute for professional medical advice, diagnosis or treatment. Please consult a medical professional before adopting any of the suggestions on this page. You must never disregard professional medical advice or delay seeking medical treatment based upon any content of this newsletter. PROMPTLY CONSULT YOUR PHYSICIAN OR CALL 911 IF YOU BELIEVE YOU HAVE A MEDICAL EMERGENCY.

ADHD Awareness Month

Posted on October 13, 2025 by Patrick Hercules

October is ADHD Awareness Month, a time dedicated to raising awareness, challenging stigma, and celebrating the unique strengths that often come with a neurodivergent brain.

Adult attention-deficit/hyperactivity disorder (ADHD) is a mental health disorder that includes a combination of persistent problems, such as difficulty paying attention, hyperactivity, and impulsive behavior. Adult ADHD can lead to unstable relationships, poor work or school performance, low self-esteem, and other problems.

Some people with ADHD have fewer symptoms as they age, but some adults continue to have major symptoms that interfere with daily functioning. Adult ADHD symptoms include:

Impulsiveness
Disorganization and problems prioritizing
Poor time management skills
Problems focusing on a task
Trouble multitasking
Excessive activity or restlessness
Poor planning
Low frustration tolerance
Frequent mood swings
Problems following through and completing tasks
Hot temper
Trouble coping with stress

Symptoms can range from mild to severe. Many adults with ADHD aren’t aware they have it.

The exact cause of ADHD is not clear, but research efforts continue. Factors that may be involved in the development of ADHD include:

Genetics
Environment
Problems during development

Factors that may increase the risk of ADHD may include:

You have blood relatives, such as a parent or sibling, with ADHD or another mental health disorder
Your mother smoked, drank alcohol, or used drugs during pregnancy
As a child, you were exposed to environmental toxins such as lead, found mainly in paint and pipes in older buildings
You were born prematurely

Signs and symptoms of ADHD in adults can be difficult to spot. However, the core symptoms of ADHD start early in life, before the age of 12, continuing into adulthood, creating major problems.

There is no single test that can confirm an ADHD diagnosis. A diagnosis will likely include:

A physical exam
Questions about your current medical issues, personal and family medical history, and the history of your symptoms
ADHD rating scales or psychological tests

Standard treatments for ADHD in adults typically involve medication, education, skills training, and psychological counseling. A combination of these is often the most effective treatment as they can help manage many symptoms of ADHD, but they won’t cure it.

If you need the assistance and support of a mental health professional at Jamaica Hospital Medical Center, please call 718-206-5575 to schedule an appointment.

Sickle Cell Awareness Month

Posted on September 5, 2024 by Patrick Hercules

September is sickle cell awareness month. Sickle cell disease is a group of inherited red blood cell disorders that affect hemoglobin, the protein that carries oxygen through the body. It is the most common inherited blood disorder in the United States. The disease gets its name from the abnormal crescent or “sickle” shape that some red blood cells develop, causing those red blood cells to block the blood flow through the body creating recurring episodes of pain.

Sickle cell disease is a lifelong disease affecting more than 100,000 people in the United States and 20 million worldwide. In the U.S., most people who have sickle cell disease are of African ancestry or identify themselves as black. About one in 13 Black or African American babies are born with the sickle cell trait and about one in every 365 Black or African American babies are born with sickle cell disease. Many people who come from Hispanic, Southern European, Middle Eastern, or Asian Indian backgrounds also have sickle cell disease.

There are many symptoms of sickle cell disease. Early symptoms can include:

Jaundice- a condition that causes the color of the skin or whites of the eyes to turn yellow
Extreme tiredness
Painful swelling of the hands and feet

Many serious symptoms and complications of sickle disease can include:

Episodes of severe pain
Anemia symptoms- fatigue, shortness of breath, dizziness, and an irregular heartbeat
Fever
Acute chest syndrome
Stroke
Priapism
Avascular necrosis
Pulmonary hypertension
Organ damage
Leg ulcers
Gallstones
Deep vein thrombosis
Pregnancy complications
Vision problems
Frequent infections

There are many ways to manage and treat sickle cell disease including:

Medicines
Blood transfusions
Blood and bone marrow transplant
Gene therapies
Complementary and alternative medicine (CAM)

Your healthcare team will probably include a doctor specializing in blood diseases called a hematologist.

If you need help managing symptoms of sickle cell disease or sickle cell trait, schedule an appointment with a hematologist at Jamaica Hospital Medical Center’s Department of Internal Medicine at (718) 206-7001.

Is The “Stress Hormone” Cortisol Causing You To Gain Weight?

Posted on January 9, 2019 by Joann Ariola

Obesity is one of the biggest health problems in the world. It can be a contributing factor in other diseases, such as diabetes, cardiovascular disease, cancer, stroke, and dementia. Overeating is often cited as the only reason people are obese. In discussions about weight gain and obesity, many people seem to think that it is purely a function of willpower.

Since what we weigh is, normally, attributed to what we eat we must ask the question:

Is over-eating the only reason a person becomes overweight?

Human behavior is driven by various biological factors like genetics, hormones, stress and neural circuits. Eating behavior, just like sleeping behavior, is driven by biological processes. Therefore, saying that behavior is a function of willpower is way too simplistic.

Studies have shown that when we are stressed or during tension filled times our body increases its production of the “stress hormone” Cortisol. The increase in Cortisol may be the culprit causing you to overeat.

According to increased levels of the stress hormone cortisol causes higher insulin levels which then cause your blood sugar to drop making you crave sugary, fatty foods. The end result of these actions can be an increase in appetite.

Here are some additional factors thought to be the leading causes of weight gain, obesity and metabolic disease that have nothing to do with willpower:

Genetics – Obesity has a strong genetic component. Offspring’s of obese parents are much more likely to become obese than offspring’s of lean parents.
Insulin – Insulin is a very important hormone that regulates energy storage, among other things. One of the functions of insulin is to tell fat cells to store fat and to hold on to the fat they already carry. When insulin levels elevate, energy is selectively stored in fat cells instead of being available for use.
Medications – Certain medications can cause weight gain as a side effect. Some examples include diabetes medication, antidepressants and antipsychotics. These medications don’t cause a “willpower deficiency,” they alter the function of the body and brain, making it selectively store fat instead of burning it.

Leptin –This hormone is produced by the fat cells and is supposed to send signals to the hypothalamus (the part of our brain that controls food intake) that we are full and need to stop eating. The problem for some is their leptin isn’t working as it should because the brain becomes resistant to it. This is called leptin resistance and is believed to be a leading factor in the pathogenesis of obesity.
Thyroid Disease – Thyroid hormone regulates our metabolism. Too little hormone slows the metabolism and often causes weight gain.
Cushing syndrome – Occurs when your body is exposed to high levels of the hormone cortisol for a long time. Cushing syndrome, sometimes called hypercortisolism, may be caused by the use of oral corticosteroid medication. The condition can also occur when your body makes too much cortisol on its own.

A doctor can determine if any of these conditions or treatments is responsible for your obesity. If you would like to see a physician, please contact the Jamaica Hospital Medical Center’s Ambulatory Care Center to schedule an appointment. 718-206-7001.

Obesity: Lifestyle or Genetics?

Posted on November 1, 2017 by Joann Ariola

“How does she eat so much and not gain any weight?”

It’s a question that has left many puzzled and quite frustrated. The conversation about weight, however, is a longstanding one. Today, especially, weight gain and weight loss remain relevant discussions, as the United States faces an obesity epidemic.

Though several health initiatives to help fight obesity have been implemented over the past few years, it is important to first understand what factors contribute to obesity. According to a National Institutes of Health funded study conducted by UCLA, not only does behavior and environment affect obesity, but genetic factors can also play a significant role in causing obesity.

How our genes actually influence obesity varies. As explained by the Centers for Disease Control and Prevention (CDC), genes give the body instruction for responding to changes in its environment. Some research has linked genes to metabolism, pointing out that genetics affects how one’s body responds to high-fat diets. Genes can either cause an increased tendency to store fat or a diminished capacity to use dietary fats as fuel. Other research has suggested that genes influence behaviors, such as overeating and being sedentary.

The conversation about obesity can now change since research has shown that body weight is hereditary and that genetic disposition affects weight. In all efforts to fight obesity, living environments where high calorie foods are prevalent and physical activity is limited should be looked at more closely.

We understand that the road to healthier choices isn’t easy to travel, especially alone. Here at Jamaica Hospital Medical Center our outpatient registered Dietitians assist patients to grow their knowledge about nutrition, wellness and healthy eating. To schedule an appointment the outpatient nutrition services department can be reached directly at .

National Birth Defect Prevention Month

Posted on January 6, 2017 by Zakiya Hazel-Jemmott

January is Birth Defects Prevention Month. Among the most common birth defects is cleft lip. Cleft lip is a birth defect that occurs when a baby’s lip or mouth does not form properly in the womb. Collectively, these birth defects commonly are called “orofacial clefts”.

The lip forms between the fourth and seventh weeks of pregnancy. A cleft lip develops if the lip tissue does not join completely before birth, resulting in an opening of the upper lip. The opening in the lip varies in size from a small slit or a large opening that goes through the lip into the nose.

The causes of orofacial clefts among most infants are unknown. However, they are thought to be caused by a combination of genetics or other factors, such as things the mother comes in contact with in her environment, or what the mother eats or drinks, or certain medications she uses during pregnancy. Recently the Center for Disease Control reported findings from research studies about risk factors that increase the chance of infant orofacial cleft:

Smoking―Women who smoke during pregnancy are more likely to have a baby with an orofacial cleft than women who do not smoke
Diabetes―Women with diabetes diagnosed before pregnancy have an increased risk of having a child with a cleft lip with or without cleft palate, compared to women who did not have diabetes
Use of certain medicines―Women who used certain medicines to treat epilepsy during the first trimester (the first 3 months) of pregnancy are at greater risk

Orofacial clefts, especially cleft lip with or without cleft palate, can be diagnosed during pregnancy during a routine ultrasound. Services and treatment for children with orofacial clefts can vary depending on:

The severity of the cleft
The child’s age and needs
The presence of associated syndromes
Other birth defects

Surgery to repair a cleft lip usually occurs in the first few months of life and is recommended within the first 12 months of life. Children born with orofacial clefts might need other types of treatments and services, such as special dental or orthodontic care or speech therapy.

If you are an expecting mother in need of a doctor, Jamaica Hospital Medical Center’s Obstetrical Division practices family-centered care. The obstetrical unit is furnished with state-of-the-art equipment, including high tech monitors and sonographic equipment. For more information or to schedule an appointment, please call 718-206-6808.

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OBESITY OR GENETICS

Posted on October 5, 2016 by Joann Ariola

“How does she eat so much and not gain any weight?”

Obesity: Lifestyle or Genetics?

Posted on April 22, 2014 by Natifia Mullings

“How does she eat so much and not gain any weight?”