Tag Archive for: Dr. Smitha Krishnamurthi

Is the COVID-19 Vaccine Safe and Effective for People With Colon Cancer?

Is the COVID-19 Vaccine Safe and Effective for People With Colon Cancer? from Patient Empowerment Network on Vimeo.

Dr. Smitha Krishnamurthi, a colon cancer specialist at Cleveland Clinic, provides vaccine safety information and discusses the effective immune response after COVID-19 vaccination in patients with colon cancer.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:

Should Your Family Members Be Screened for Colon Cancer?


Transcript:

Katherine Banwell:

Is the COVID vaccine safe and effective for people with colon cancer?

Dr. Krishnamurthi:

Yes. The COVID vaccine is safe. We have no data that patients with colorectal cancer or patients who are undergoing chemotherapy are at any increased risk of any side effects from the vaccine. People should be able to make a good immune response. Patients who are not able to make a good immune response are those who are getting very high-dose chemotherapy, like a bone marrow transplant or an organ transplant. But chemotherapy for colorectal cancer should not be problem. We basically advise – I ask all my patients to get the vaccine. They should just get it whenever they can. They don’t have to worry about timing in regards to their chemotherapy.

Katherine Banwell:

Okay. Dr. Krishnamurthi, thank you so much for joining us today.

Dr. Krishnamurthi:

Katherine, thank you so much for having me. It’s been such a pleasure.

Colon Cancer Treatment and Research News

Colon Cancer Treatment and Research News from Patient Empowerment Network on Vimeo.

What’s the latest colon cancer treatment and research news from the American Society of Clinical Oncology (ASCO) meeting? Dr. Smitha Krishnamurthi shares updates about research findings that were presented at the meeting along with exciting ongoing research in colon cancer.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:

Should Your Family Members Be Screened for Colon Cancer?


Transcript:

Katherine Banwell:

Welcome, Dr. Krishnamurthi. Would you mind Would you mind introducing yourself?  

Dr. Krishnamurthi:

Sure, it’s my pleasure. Thank you for having me, Katherine. I’m Smitha Krishnamurthi. I’m a medical oncologist. I specialize in taking care of patients who have colorectal cancer and other gastrointestinal cancers. As a medical oncologist, I treat patients with drug therapy like chemotherapy and immunotherapy.  

Katherine Banwell:

And where are you located?  

Dr. Krishnamurthi: I work at Cleveland Clinic in Cleveland, Ohio. 

Katherine Banwell:

Excellent. Thank you so much.  

Cancer researchers came together recently to share findings at the annual American Society of Clinical Oncology meeting, also known as ASCO. Are there highlights from the meeting that patients should know about?  

Dr. Krishnamurthi:

Yes. That’s always such an amazing gathering of knowledge. Thankfully, it’s continued virtually at least due to the pandemic. This past ASCO last month, some of the major highlights in colorectal cancer were the final overall survival results were presented from the study of pembrolizumab versus chemotherapy as first-line treatment for patients with metastatic colorectal cancer with deficient mismatch repair or MSI high status.  

These are the patients who are predicted to benefit from immunotherapy.  

We’d already seen earlier results that the patients who received the immunotherapy up front had a much-improved time for the cancer to regress. Here, they presented the overall survival results, which showed that the median survival for patients who received chemotherapy was three years, meaning half the patients lived shorter time, half lived longer. For the patients who received the pembrolizumab, they hadn’t even reached the median survival at five years.  

So, it looks very important that we know this MSI status or mismatch repair status from the beginning, so that we can offer the right patients immunotherapy first.  

Other highlights were, for example, for patients who have cancers that overexpress HER2/neu. It’s an oncogene. When it’s overexpressed, it tends to drive growth of cancers.  

 We don’t have any FDA-approved drugs for HER2-amplified colorectal cancer, but there are many studies showing that those patients with that type of cancer benefit from targeting this HER2 protein. There are, of course, approved drugs for HER2/neu-amplified breast cancer and stomach cancer. One of these drugs is trastuzumab deruxtecan.   

It’s a drug that targets the HER2/neu protein, but it’s connected with chemo. So, it’s like bringing chemo right to the tumor. The results showed a very high response rate. But it does have a peculiar toxicity of causing inflammation in the lung. So, it’s another treatment option that could be approved. It’s good to see that we’re getting more treatment options there. 

Katherine Banwell:

What are you excited about when it comes to colon cancer research? 

Dr. Krishnamurthi:

There are so many important questions we still need to learn the answers to. I find that patients who have, of course, a mutation of the KRAS or NRAS gene and have metastatic cancer, they have fewer treatment options than when those genes are normal. 

KRAS is a very important oncogene driver of cancer in colorectal cancer, but also in lung cancer and pancreatic cancer. For many decades, it was thought that there was no way to target this protein. Now, we’re seeing that there’s a certain type of KRAS mutation – KRAS G12C – that can be targeted with drugs that now are approved in lung cancer. 

It’s a small fraction of colorectal cancer patients who have that mutation, but it’s like we’re beginning to crack this code. The most common KRAS mutation is G12D. There is a company – Mirati – that has a candidate G12D inhibitor that’s going to enter clinical trials this year. It’s very exciting.   

There was recently a press release onvansertib, which is a polo-like kinase inhibitor, combined with chemotherapy, a second-line treatment for patients with KRAS-mutant colon cancer, showing a much higher response rate than we would expect with the chemotherapy alone.  

That will need to be validated in a large, randomized trial, but that’s looking very exciting. Then the other aspects that I’m most excited about are how to get immunotherapy to work for more of our patients.   

We know that patients who have abnormal mismatch repair or MSI-high cancers can benefit remarkably in the metastatic setting and there are studies going on in the early-stage setting and there are reports of it looking quite promising. But how do we get it to work for the majority of patients who have normal DNA mismatch repair or MSS, microsatellite stable cancers? That’s an area of great interest.  

We’ve seen a study in the Netherlands where they treated patients with normal DNA mismatch repair, early-stage colon cancer, with just two doses of immunotherapy before going to surgery for their early-stage cancer. I was surprised to see like four out of 15 patients responded to the treatment. Perhaps earlier stage cancers may be more responsive to immunotherapy. Definitely looking forward to more updates from that study, which we’ll probably hear in the fall at the European Society of Medical Oncology meeting in fall of 2021. 

Then, of course, the other area that really interests me is what is causing this epidemic of colorectal cancer in young adults? This is really a matter of laboratory studies and epidemiologic studies, but that’s also an area of great interest.  

Katherin Banwell:

There’s an epidemic among younger people?  

Dr. Krishnamurthi:

Yeah. I think of it as an epidemic in that colorectal cancer has definitely been increasing in young Americans and young people around the world in many countries.  

Basically, clearly, there’s been an increase since the 1980s. It seems to be something environmental because it’s related to time. So, it’s not inherited. Some of our patients below the age of 50 diagnosed with colorectal cancer do not have an inherited cause. A study from Ohio State found that 16 percent have an inherited cause. So, 84 percent of them do not. This is definitely increasing, particularly of rectal cancer. I think it must be something environmental. Possibly something like we’re ingesting because our colon is exposed to what we eat. But we really don’t know yet.  

And so, I just advise all my patients and everyone who is interested to just try to eat as much natural food as we can. To try to minimize processed foods and chemicals. 

Because I think that’s the best we can do until we really identify the cause.  

Should Your Family Members Be Screened for Colon Cancer?

Should Your Family Members Be Screened for Colon Cancer? from Patient Empowerment Network on Vimeo.

When should members of your family get colon cancer screening? Dr. Smitha Krishnamurthi from Cleveland Clinic shares screening guidelines for family members and discusses the necessity of genetic counseling.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:

How Is Colon Cancer Treated?


Transcript:

Katherine Banwell:

If you’ve been diagnosed with colon cancer, what is the guidance for screening family members, such as children and siblings?

Dr. Krishnamurthi:

Yes, this is an excellent question. We tell all our patients who have been diagnosed with colorectal cancer that their first-degree relatives should start screening by age 40, but also 10 years younger than the youngest affected member of the family. So, whichever is younger.

If my patient is 45, definitely that person needs to have genetic counseling because they’re young for colorectal cancer. Then we’d recommend at least start by age 35 for their children or siblings, even if no inherited cause is found.

Katherine Banwell:

Okay, all right.

How Speaking Up Can Positively Impact Your Colon Cancer Care

How Speaking Up Can Positively Impact Your Colon Cancer Care from Patient Empowerment Network on Vimeo.

Why should you advocate for the best care for you? Dr. Smitha Krishnamurthi, a colon cancer specialist from Cleveland Clinic, provides key advice to access better care, including the value of second opinions, and why you should feel empowered to speak up.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:

Should Your Family Members Be Screened for Colon Cancer?


Transcript:

Katherine Banwell:

What is your advice to patients who may feel like they’re hurting feelings by seeking a specialist or even a second opinion?

Dr. Krishnamurthi:

I would advise patients to not worry about that at all. I think that any one of us diagnosed with colorectal cancer would want a second opinion, would want to make sure that we’re getting an opinion from a high-volume cancer. Working here are Cleveland Clinic, I have the luxury of focusing on treatment of gastrointestinal cancers, whereas my colleagues who are in the community are treating patients with all different types of cancers. They have to be knowledgeable in all different types of cancers.

I think that’s actually much harder. I think that if your oncologist is not a specialist, the oncologist may actually appreciate having an opinion from a specialist, which helps them as well.

I think that if the doctor is going to be offended, then that’s probably not the right doctor to see. I think it’s important to just advocate for oneself and go for it.

Katherine Banwell:

That leads to my next question. What advice do you have about self-advocacy, about speaking up for yourself as a patient?

Dr. Krishnamurthi:

I think that’s very important to feel comfortable with your treatment team, with the doctor, nurse, nurse practitioner. If you have the luxury where you have choices where you live, seek out somebody who you can really connect with. I think it’s very important for the treating team to know what the patient is going through.

We have to know how the treatment is going so that we’re dosing properly, making adjustments. We want to know what our patient’s goals are so that we’re providing the best quality care.

I think it’s helpful to bring somebody to appointments. Or if you can’t bring somebody, you’ll call them on the phone. We’re doing that a lot now. People are joining by video call or even speaker phone. Many offices will have a speakerphone. You can ask to have somebody called on your behalf. Especially with COVID and the restricted visitation. Let’s get people on the phone. Somebody else to listen for you. For the patient, I mean, and to take notes. That really helps

Newly Diagnosed With Colon Cancer? Key Advice From an Expert

Newly Diagnosed With Colon Cancer? Key Advice From an Expert from Patient Empowerment Network on Vimeo.

Dr. Smitha Krishnamurthi, a colon cancer specialist from Cleveland Clinic, shares steps to take following diagnosis to ensure patients are receiving optimal care.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:

Your Colon Cancer Care Colon Cancer Toolkit: Office Visit Planner


Transcript:

Katherine Banwell:

What three key pieces of advice would you have for a patient who has just been diagnosed with colon cancer?

Dr. Krishnamurthi:

Okay. Yes, when somebody received a diagnosis of colon cancer, of course it’s a very serious diagnosis. I would always encourage patients to seek out expert care. Meaning see a person who specializes in treatment of colorectal cancer. So, a colorectal surgeon and a colorectal medical oncologist. I am a medical oncologist who specializes in treatment of patients with gastrointestinal cancer.

These sorts of specialists are typically found at high-volume cancer centers. Look for National Cancer Institute-designated comprehensive cancer centers. That designation implies very high quality of care and that there’s a lot of basic science research, clinical research, and what we call translational research. Like trying to bring lab discoveries to the bedside. I would encourage that for everybody. Of course, not everyone lives near such a center, but what we’ve learned through the pandemic is that we can use telemedicine far more than we ever did before.

We do a lot of virtual visits with patients who may live many hours away. I think it’s important, even if you have one visit for a second opinion, a treatment plan, that you could then receive that treatment with the local oncologist. I think that’s very helpful, and I would encourage everyone to seek out an expert opinion.

Also, I think it’s very important to seek out as much support, because this is a major diagnosis and a lot to go through. There is a lot of support out there that people may not be aware of besides, of course, family and friends. There are excellent patient advocacy groups and groups like your organization, trying to bring information to patients. Patients can ask their doctor or nurse about what’s local in terms of support groups, but there are also large internet presences by patient advocacy organizations. They are giving people high-quality, evidenced-based recommendations, advice.

People get to learn from other peers who have gone through treatment. I can’t name them all, but just for example, like the Colon Town and Colorectal Cancer Alliance. I believe just launching today is My Bluem, B-L-U-E-M.org.

I happen to be executive board member of that, so full disclosure. But it’s an organization created by colorectal cancer survivors for patients to come to one website to access information about all of these different organizations. There is a huge community out there for people who are diagnosed with colorectal cancer. The third piece of advice, I would just say when you’re looking for information, make sure it’s from a reliable source like these patient advocacy organizations. I tend to look myself for websites that end in .org, .gov, .edu, and also .net.

Our American Society of Clinical Oncologists organization is ASCO.net, where you can get great advice about cancers. Cancer.gov, cancer.org. Because the internet is full of suggestions which may not be based in good science.

It’s important to have a good source.

Katherine Banwell:

Good advice. Thank you for that.

What Should Be Considered When Choosing a Colon Cancer Treatment Approach?

What Should Be Considered When Choosing a Colon Cancer Treatment Approach? from Patient Empowerment Network on Vimeo.

Dr. Smitha Krishnamurthi, a colon cancer specialist from Cleveland Clinic, reviews considerations when choosing therapy, including staging and test results, as well as how clinical trials fit into treatment planning.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:

 

Newly Diagnosed With Colon Cancer? Key Advice From an Expert

Your Colon Cancer Care Colon Cancer Toolkit: Office Visit Planner

How Speaking Up Can Positively Impact Your Colon Cancer Care

Transcript:

Katherine Banwell:

What are the main factors you take into consideration before a treatment approach is decided on?

Dr. Krishnamurthi:

For treatment of anyone with colorectal cancer, most important, of course, is the stage because stage determines whether it’s surgery alone or do we need to use chemotherapy or radiation? Or if it’s metastatic, is it systemic treatment only? We also look at the biologic features of the cancer, which we’re learning more and more are very important.

For example, we want every patient to know their DNA mismatch repair status. This is basically, is the cancer missing a gene that repairs damage to DNA? Then if that’s true, then we say they are DNA mismatch repair deficient. Or another term is “high microsatellite instability.” Mismatch repair deficient or microsatellite instability high, or you might hear MSI high.

That’s very important that we test that on all patients with colorectal cancer because in the early stage setting, it’s important because this is a way to identify patients who may have Lynch syndrome, the most common type of inherited colorectal cancer.

And also it impairs their prognosis. We know these patients tend to have a better prognosis. For example, for stage 2, we wouldn’t even have a conversation about chemotherapy if we know the patient has abnormal DNA mismatch repair or is MSI high. Then for patients of metastatic disease, it’s very important to know this upfront because those patients do better with immunotherapy as their first treatment.

So, we want to see those results for each patient. Then for our patients with metastatic cancer, we also need to see some other genetic mutations such as RAS, KRAS and NRAS gene mutations, because that affects what treatments we use.

Also, BRAF gene mutations are very important because of the particular regiment we use for treatment of that type of cancer.

We’re looking at the extent of the disease, what are the molecular features, and then also, of very importantly, what can the patient tolerate? What are the patient’s goals? We have a discussion about side effects and help them make the best choice for themselves.

Katherine Banwell:

Where do clinical trials fit in?

Dr. Krishnamurthi:

That’s an excellent question because clinical trials actually could be appropriate at any step along this pathway.

There are clinical trials that may be looking at tests to diagnose cancer better or detect it earlier.

There are treatment trials where they may be looking at standard treatment versus something investigational or standard plus investigational. Those sorts of treatment trials may be very interesting as the initial treatment or they could be used when a person has gone through all the standard treatments. Then there’s nothing left to do but try investigational. There are also studies that are looking at supportive care – a new treatment for nausea, for example. There are studies that are looking at the biologic factors of the cancer. Maybe asking a person to donate blood or give permission to use their tumor sample. By participation in these studies, people who volunteer for that are being so generous with their time and their lives.

But that’s how the field advances, especially for treatment trials. This is a way to access cutting edge treatments because the study is being done because the drug looks promising.

I think it’s very important to ask about clinical trials from the beginning and every time there’s a decision point made in the treatment.

How Is Colon Cancer Treated?

How Is Colon Cancer Treated? from Patient Empowerment Network on Vimeo.

Dr. Smitha Krishnamurthi, a colon cancer specialist from Cleveland Clinic, shares an overview of colon cancer treatment and which approaches are used for each stage for optimal patient outcomes.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:


Transcript:

Katherine Banwell:

Can you provide us with an overview of how colon cancer is treated?

Dr. Krishnamurthi:

Yes. Colon cancer is treated based on the stage. It’s a disease that, for the vast majority of patients, is only cured with surgery.

If it can be surgically resected, that’s how this disease is cured. So, it’s very important that we do all we can to maximize early detection because it’s a highly curable cancer when it’s caught early. For early-stage colon cancer, patients are treated with surgery. So, stages 1, 2, and 3.

If it’s rectal cancer, we do some treatment before surgery. We give some chemotherapy and radiation for stages 2 and 3 beforehand to maximally shrink down the tumor to enable the surgeon to take the tumor out of the pelvis with normal tissue all around, like negative margins. Rectal cancer tends to be more complicated surgery because of its location in the pelvis.

So, it’s a little bit different from colon cancer in that we do that chemo radiation and chemotherapy up front. Whereas, for colon cancer, patients who have early-stage disease have surgery. And then, if it’s just stage 1, and this is true for rectal also, they’re done.

Excellent prognosis and go on to surveillance.

But if it’s a stage 2, then in colon cancer we have a discussion about chemotherapy afterwards because that could increase the cure rate for some patients. But for stage 3, we absolutely want to offer chemotherapy to our patients with colon cancer because of this very long, proven track record that chemotherapy can increase the cure rate for stage 3 patients, so when it’s gone to lymph nodes. Then if the disease is metastatic, meaning it’s spread to other distant organs like liver or lung, chemotherapy is the mainstay of treatment, generally speaking.

But there are subsets of patients who benefit from surgery. So, if the cancer is metastasized to just the liver or the lung or both organs, but in limited fashion, there is a track record for patients being cured with surgery.

We always are considering that when we have patients with metastatic disease. My first thought is, is this cancer potentially curable? Then we go from there. In some cases, it’s clear that it’s not curable; it’s widely metastatic. Then there’s no point in subjecting a person to surgery and we know that chemotherapy or drug therapy would be the mainstay of treatment.

What Are the Stages of Colon Cancer

What Are the Stages of Colon Cancer from Patient Empowerment Network on Vimeo.

Colon cancer specialist, Dr. Smitha Krishnamurthi of Cleveland Clinic, provides an overview of the stages of colon cancer and how these stages are determined.

Dr. Smitha Krishnamurthi is a gastrointestinal medical oncologist at the Cleveland Clinic. Learn more about Dr. Krishnamurthi here.

See More From The Pro-Active Colon Cancer Patient Toolkit


Related Resources:

How Is Colon Cancer Treated?


Transcript:

Katherine Banwell:

Let’s start with a basic question. What are the stages of colon cancer?

Dr. Krishnamurthi:

Colon cancer is categorized in four stages – stage 1, 2, 3, 4. This takes into account the tumor itself, how thick it is. These tumors start on the inside of the colon, like as a polyp. Then they can grow through the colon wall. The tumor thickness and has it spread to any of the lymph nodes? and has it spread further to a distant organ like liver or lungs?

That’s a tumor node metastasis. Considerations that go into the staging. Stage 1 colon cancer or colorectal cancer would be a very shallow tumor, maybe just in a polyp and hasn’t spread to any nodes or anywhere else. Stage 2 is when the tumor is thicker. It may be involving the full thickness of the colon or rectum but has not spread to any nearby lymph nodes. Stage 3 is when the cancer has spread to regional or nearby lymph nodes. Stage 4 is when it’s metastatic or it’s spread to another organ.

Katherine:

Okay. Thank you.