Research on a new drug? Let's talk about this clinical trial!

You've probably heard about research that's being done to find new drugs or new treatments. Sometimes doctors talk about these things too. So, you might be wondering what these " clinical trials " or ``clinical trials'' mean. Don't worry, let's talk about this simply and clearly.

What is a clinical trial?

Simply put, a clinical trial is a medical research study in which people volunteer to participate. This is very important because it is the only way for researchers to know for sure whether a new treatment really works and whether it is safe for people.

There are several types of clinical trials. Some are about finding new diseases, some are about preventing diseases, and some are about diagnosing diseases. But today we are mostly talking about clinical trials that are looking for new treatments. Medical researchers also call these "treatment trials." These can test new drugs, how existing drugs are given to treat different diseases, new medical devices , or other treatments.

You might be wondering, "Who would volunteer for this?" Some people participate because they have the disease being studied, hoping to find a new treatment. And there are also healthy people who don't have any disease, who want to help others and contribute to the advancement of medical science.

What happens before a clinical trial begins?

Think about it, you can't just give people a new drug all at once. There's a big process before that. Usually, these steps are followed:

• Preclinical tests: Every clinical trial begins with an idea for a new treatment (such as a new drug, combination of drugs, or medical device). These preclinical tests are conducted in laboratories or on animals .
• Clinical trial protocol: If the preliminary tests mentioned above show that the new treatment has a chance of success, the researchers then create a plan of action. This is called a clinical trial protocol. These plans can vary from one to another. However, they should include the purpose of the trial, what treatments are being tested, and what the researchers hope to measure at the end of the trial (trial endpoints).
• Review and approval from regulatory agencies such as the FDA :In a country like America, researchers must obtain approval from the FDA (Food and Drug Administration) before starting a clinical trial. In our country, approval from the relevant authorities is also required.
• Institutional Review and Approval: This involves the review of the Institutional Review Board (IRB) or Ethics Committee of any hospital involved in the clinical trial. The main focus of this committee is the safety and rights of the participants in the trial.

Only after all these approvals are received can researchers begin looking for people who are willing to participate. Sometimes, they will contact people who have already registered. In many cases, your doctor may even refer you to a clinical trial.

If you are thinking about taking part in a clinical trial, the medical team coordinating the research will first give you a full explanation of what it is about. Then you can decide whether you want to participate or not. This process is called obtaining `` Informed Consent .''

What is `Informed Consent`?

This is a very important conversation. This is where you will learn the full details about the clinical trial. The research team will explain everything to you.

"Informed consent" is not just a signature. It's your right!

They will show you an "informed consent document" and explain it to you step by step. This document explains the purpose and procedure of the trial in great detail. It also explains any potential risks and benefits. It also explains what the research methods will be and what your options are if you do not participate in the clinical trial. It also explains how long the trial will last, what follow -up requirements are, what costs will be involved, and whether you will receive any compensation. Finally, it clearly states that participation in the clinical trial is completely voluntary.

The leaflet may say that the trial is "randomized." It's like flipping a coin. This means that not everyone who takes part in the trial will get the new, experimental treatment. If you have a disease and are joining the trial in the hope of getting a new treatment, this is important to know.

Clinical trial details can sometimes be a little complicated and hard to understand. So, take your time and ask any questions you have, as many times as you like. The `Informed Consent` form is what the clinical trial is all about.It is not a contract between you and the doctors who are doing the research. If you decide to join the study, you will have to sign that paper. However, signing does not mean you are bound by it. You have the full right to change your mind and withdraw at any time, even after the study has begun.

What happens during a clinical trial?

There are typically four phases of a clinical trial. Each phase has a specific purpose. Researchers look for new volunteers for each phase. The four phases are:

• Phase 1: This usually involves a small group of people (between 20 and 100). They are likely to be healthy people with no known medical conditions. Researchers use this phase to determine the appropriate dosage of the drug and to see if the treatment causes any serious side effects .
• Phase 2: This involves between 100 and 300 people. All of them have a specific disease. In this phase, researchers look to see if the treatment really works and if it is new or has more serious side effects than before.
• Phase 3: This phase can involve between 300 and 3,000 people. This is where researchers make sure that the experimental treatment actually works and is safe. They may also compare it to existing treatments. In a country like the United States, the FDA decides whether to approve the treatment for more people based on the results of this phase 3 trial.
• Phase 4: Researchers continue to monitor the treatment even after it has been approved by the FDA. Because some new treatments have side effects that only become apparent after people have been using the drug for a while, researchers continue to look for side effects or other problems.

What happens after a clinical trial?

A clinical trial can end for a variety of reasons. For example, a treatment that was in the research phase may have received FDA approval and become available to more people. However, sometimes, if the tests show that the treatment is not as effective as expected, or is no better than existing treatments, the clinical trial may be stopped before completing all four phases.

What are the benefits of joining a clinical trial?

There are several benefits to being part of a clinical trial. If you are suffering from a certain disease:

• There may be an opportunity to receive new treatments that may be more effective than current treatments.
• You can play a more active role in making decisions about your healthcare .
• You can help others who have the same disease as you.

If you are healthy, you will have the joy of helping researchers find better treatments for others.

What are the risks?

Clinical trials can come with certain risks. You will be informed about these risks when you give your "informed consent." However, you can ask for more information at any time. If the risks change during the trial, or if new risks emerge, you will be informed about them. You can then reconsider whether to participate. Some of the possible risks include:

• The treatment, which is still in the research phase , may cause side effects that may require medical treatment.
• This test may take longer than the usual treatment for your condition. For example, there may be more doctor's appointments, tests, or hospitalizations than usual.
• Research-based treatments may not work, or they may not be as good as standard treatments.
• You may not receive the research-based treatment being tested. You may receive the standard treatment for your condition, or you may be placed in a ``placebo'' group, where you receive no treatment at all.

What questions should I ask about a clinical trial?

Like many people, you may have many questions about volunteering for a clinical trial. Here are some questions you can ask:

• Why is this study being done?
• How long do I need to participate in this study?
• If I am receiving treatment, how will it be given (as a pill, as an `IV`, as an `implant`, etc.)?
• How many times will I have to come? Where do I have to come?
• How long does it take to come once?
• Will I have to pay for any part of this study? Will my insurance cover anything for this?
• What are the risks of this study? How will this affect my health?
• What will happen to my medical treatment if I do not participate or withdraw from the study?
• Who is in charge of my medical care?
• Will I get any results from this study?
• If the treatment is approved, will I continue to receive it?
• If I have severe side effects from the treatment, can I withdraw from the study?

Don't be afraid to ask not only these questions, but anything you think of.

Who ensures the safety of clinical trials ?

Safety measures have been implemented throughout the clinical trial process to ensure the safety of participants:

• Data Safety and Monitoring Boards (DSMBs):These are made up of medical experts. They review the results throughout the clinical trial. If they decide that the treatment under investigation is not working or that the side effects are worse than expected, these boards can quickly stop the trial.
• Government agencies: Agencies like the FDA and the Office for Human Research Protections regulate and oversee all clinical trials in the United States. The same is true for regulatory agencies in Sri Lanka.
• Institutional Review Boards (IRBs): These boards, located at research sites, must approve a clinical trial before it can be conducted. These boards ensure that volunteers are not exposed to unnecessary risks and protect their safety. IRBs are usually made up of members of the community, as well as doctors and researchers who are not part of the research team.

What is a `Randomized Clinical Trial`?

In a "randomized" trial, researchers put volunteers into different groups. Each group gets a different treatment. Maybe they're testing a standard treatment with an experimental treatment, or two experimental treatments. The groups are put into these groups randomly, like flipping a coin. Then the groups are the same. That makes it easier for researchers to figure out which treatment is best.

What is a Decentralized Clinical Trial?

A decentralized clinical trial is one where the trial is conducted in multiple locations, rather than just one. Traditionally, clinical trials require volunteers to travel to a specific location. However, in a decentralized trial, volunteers can participate without having to travel. For example, you can receive treatment in your home, at a nearby health center, or at a nearby laboratory.

Who can participate in a clinical trial?

Clinical trials have eligibility guidelines . They tell you who can and cannot participate. Not everyone who wants to be in a clinical trial can participate. These guidelines can vary. But, in general, they depend on things like your age, gender, overall health, the type of disease you have, and the treatments you are currently taking.

How do I find out about clinical trials?

First, talk to your treating doctor. He or she knows you and your condition, so he or she can recommend the tests that are right for you. Another way is to look at clinical trial databases online. For example, you can look at the database maintained by the US National Center for Biotechnology Information. In Sri Lanka, you can also find information about such research through relevant health institutions.

How is a clinical trial different from regular treatment?

The difference is in the type of medical care you receive. If you are sick and participate in a clinical trial, your regular medical team will take care of your ongoing health problems. The clinical trial team will focus solely on the new drug or device being tested. The team will monitor your response to the investigational treatment and treat any side effects you may have.

Clinical trials are what advance medicine. From the outside, it may seem like it's all about science. But it's really about the people who help make medicine better. Without volunteers, researchers can't know if an idea will actually become a safe, effective treatment.

A single trial could cure a disease or find a breakthrough treatment that helps people live longer. Even if a trial doesn’t produce the expected results, it can still lead researchers to a different direction and achieve more successful results. Deciding to volunteer for a clinical trial is a big decision. If you’re thinking about it, don’t hesitate to ask any questions you have, as many times as you want, until you feel confident in your decision.

Take-Home Message

So, I hope you now have a better understanding of what a ``Clinical Trial'' is that we talked about.

• This is essential research to find new treatments.
• Your "Informed Consent" is very important. Know everything, ask questions, and make a decision.
• Be aware of the benefits as well as the risks.
• You have the right to withdraw from the test at any time.
• These are subject to strict regulation and security measures.

If you or someone you know is considering participating in a study like this, this information may be helpful to them as well. Always talk to your doctor for more information.

` Clinical trials, new drugs, medical research, informed consent, treatment phases, health information, volunteer work