CBD Oil For Ovarian Cancer


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Dramatic response to Laetrile and cannabidiol (CBD) oil in a patient with metastatic low grade serous ovarian carcinoma This is an open access article under the CC BY-NC-ND license Cannabis oil and ovarian cancer

Dramatic response to Laetrile and cannabidiol (CBD) oil in a patient with metastatic low grade serous ovarian carcinoma

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).


1. Introduction

Low grade serous ovarian cancer (LGSOC) is a rare subtype of serous epithelial ovarian cancer, comprising approximately 10% of all cases of serous carcinoma. The majority of women are diagnosed with advanced stage disease, despite its slow growth. Treatment options for advanced disease include neoadjuvant chemotherapy followed by interval surgical cytoreduction or primary surgical resection followed by adjuvant therapy as well as maintenance hormonal therapy (National Comprehensive Cancer Network, 2019). Adjuvant therapy traditionally consists of combination platinum and taxane based chemotherapy, although response rates are limited, and may include concurrent/maintenance hormonal therapy. Even with advanced stage at diagnosis, patients with LGSOC have an improved prognosis when compared to their high grade serous counterparts, with median overall survival of approximately 100 months reported, reflective of a protracted clinical course (Gershenson et al., 2015).

In an effort to improve oncologic outcomes, investigators have attempted to capitalize on molecular aberrations identified in LGSOC specimens. Most recently, the utilization of MEK inhibitors have been explored due to noted activation of the mitogen-activate protein kinase (MAPK) pathway in LGSOC. A phase II trial evaluating Selumatib activity in women with recurrent LGSOC (GOG 0239) demonstrated a 15% overall response rate, catalyzing the development of phase III trials examining alternate agents in this setting (Farley et al., 2013). A phase III study evaluating Trametinib vs. physicians choice chemotherapy in patients with recurrent or progressive LGSOC (GOG-281) has closed to accrual and will help guide further management with these targeted agents. Furthermore, efforts to identify appropriate patient subsets based on molecular profiling are ongoing. In context of the above, optimal management of these relatively chemotherapy-resistant tumors due to their low-grade nature remains an active area of investigation.

In addition to standard treatments, an increasing proportion of patients are exploring and incorporating complimentary alternative medicine (CAM) for the management of their cancers. Use of CAM is common among gynecologic cancer patients, although many patients may not disclose use to their treating physician. Women who are older are more likely to use CAM either in conjunction with standard treatment or alone, as compared to their younger or male counterparts (Gansler et al., 2008). These therapies may or may not be recommended by their primary oncologist, and many have not been evaluated in a clinical trial setting.

In this case report, we present a woman with LGSOC who declined primary systemic chemotherapy followed by interval surgical resection and opted for CAM therapy with Laetrile (amygdalin) and cannabidol (CBD) oil. The patient has granted permission for this publication.

2. Case

An 81-year-old woman presented to her primary care physician with an umbilical mass that was suspected to be a hernia in March 2017. She was taken to the operating room in April 2017 for planned herniorrhaphy. The surgical findings were notable for a solid, peri-umbilical mass, as well as diffuse intra-abdominal nodularity. Final pathology of the resected umbilical lesion demonstrated a serous carcinoma, likely mullerian primary based on immunohistochemistry staining. Her Ca-125 was found to be elevated at 77.

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Following the above surgery, she underwent diagnostic imaging, with computed tomography (CT) scan of the chest, abdomen and pelvis demonstrating multiple mesenteric soft tissue masses ranging from 7 mm to 7 cm and omental carcinomatosis. A 5.8 cm solid right adnexal mass and 3.3 cm solid left adnexal mass were also identified ( Fig. 1 ). Lymphadenopathy was noted along the left common iliac vessels and the left pelvic sidewall. She was subsequently referred to our practice for consultation and based on imaging and clinical examination, neoadjuvant carboplatin/paclitaxel with interval cytoreduction was recommended. She denied any known family history of cancer and BRCA 1 and 2 germline testing was negative. Her pathology was reviewed at our institution and confirmed to be LGSOC with low grade atypia and occasional psammoma bodies. The submitted tissue sample was estrogen and progesterone receptor positive.

CT scan May 2017, illustrating a right adnexal mass measuring 5.8 cm × 5.0 cm.

After extensive counseling, the patient declined all interventions due to concerns regarding quality of life and treatment toxicity. She elected to pursue alternative therapy and started Laetrile tablets (500 mg orally four times per day) and cannabidiol (CBD) oil (1 drop sublingually each evening) in May 2017. Her Ca-125 level in May 2017 was 46, and after one month on the above regimen, her Ca-125 normalized to 22 ( Fig. 2 ).

Ca-125 trend on treatment.

In July 2017, CT imaging was repeated and she was found to have a decrease in the size of the bilateral adnexal masses and mesenteric and pelvic lymphadenopathy, which was confirmed by clinical exam. Her mesenteric and omental carcinomatosis remained stable. Genomic profiling of her primary surgical specimen was ordered at this time and no molecular aberrations were identified. She was seen for follow up in September 2017, four months after starting initial treatment, and repeat imaging in November 2017 continued to show a dramatic reduction in her disease burden, with near complete resolution of all previously identified lesions ( Fig. 3 ). On her most recent interval assessment in December 2018 she continues to show a response to therapy. She is clinically asymptomatic with a performance status of 0, which is unchanged from her performance status at time of diagnosis.

CT scan November 2017, illustrating interval decrease in size of the right adnexal mass to 1.6 cm × 1.6 cm.

3. Discussion

The management of patients with LGSOC remains a challenge, particularly in the advanced stage and recurrent setting. The current standard of care remains platinum and taxane based combination chemotherapy, followed by maintenance hormonal therapy. Unfortunately, patients who progress have limited therapeutic options and are encouraged to consider clinical trials if available, as response rates to chemotherapy in the recurrent setting are less than 5% (Grisham and Iyer, 2018).

In this case report, we highlight a dramatic response to combination Laetrile and CBD oil in a patient with widely metastatic LGSOC. Laetrile is a semi-synthetic version of amygdaline, a chemical compound found in plants and fruit seeds. Both Laetrile and amygdaline contain cyanide within a common structural component. Theoretically, Laetrile has anti-cancer effects when cyanide is released via enzymatic degradation. However, a Cochrane review published in 2015 found no randomized or quasi randomized control trials supporting the use of Laetrile in cancer patients (Milazzo, 2015). Further, they argued that due to the risk of cyanide poisoning, Laetrile use should be discouraged in patients seeking the compound for alternative cancer therapy. Concerns for toxicity in combination with inability to demonstrate clinical efficacy led to an effective ban on the substance by the FDA in the 1980s. Nevertheless, the substance remains available for purchase in variable formulations commercially.

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Cannabidiol (CBD) is a compound naturally derived from the cannabis plant. The anti-cancer effects of CBD have been evaluated predominantly in the laboratory setting. Interestingly, ovarian cancer cell lines express GPR55, a target that is inhibited indirectly by CBD and that plays a role in prostate and ovarian cancer cell proliferation (Piñeiro et al., 2011). Mouse model studies have also demonstrated cannabinoids inhibit tumor cell growth and induce apoptosis in gliomas, lymphomas, prostate, breast, lung, skin, and pancreatic cancer cells (Sarfaraz et al., 2008). Despite this theoretical benefit, there is not clear evidence that it has more or less activity than standard treatments in cancer patients.

Perhaps most provocative is the recent report that 40% of Americans believe that use of CAM is sufficient for the management of cancer (National Cancer Opinion Survey, 2019). In addition, 22% of Americans with a history of a cancer diagnosis and 38% of family caregivers share this belief. However, a recent study evaluated overall survival and adherence to treatment in patients receiving conventional cancer treatment with or without CAM for cancers considered curable. Patients who used CAM had significantly decreased overall survival when compared to those who did not, and also had higher rates of refusal of standard therapy (Johnson et al., 2018). Notably, this risk of death is linked to the refusal of therapy and not to the use of CAM itself. This demonstrates the importance and need for transparent, open discussions with patients regarding current available therapies, expected outcomes, and alternatives that patients may be seeking or have not yet disclosed.

Low grade serous ovarian cancer is a rare malignancy that is relatively resistant to chemotherapy in comparison to its high-grade counterpart. In this case report, we present the case of a female patient who demonstrated disease response after declining standard therapy and taking a combination of Laetrile and CBD oil. Previous clinical trials in humans have demonstrated no therapeutic effect in cancer patients taking Laetrile. However, basic science studies have identified cannabinoid receptors in ovarian cancer as potential therapeutic targets for cannabinoid use in treating malignancy. This area remains under study, and this case highlights the importance of communication between physicians and their patients regarding use of alternative therapies.

Conflicts of interest

The authors have no conflict of interest to report.

Author contributions

R.N.E. developed the concept for the manuscript, wrote, and edited the manuscript.

A.B. assisted with concept development for the manuscript, wrote, and edited the manuscript.

Cannabis oil and ovarian cancer: the facts

Using cannabis oil as a means to treat or cure cancer is a topic of much online debate and the internet is full of people claiming that it has effectively helped to cure their cancer. We take a closer look at the evidence behind these claims.

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The cannabis plant produces a resin that contains various substances, including cannabinoids, which may have medicinal value. Cannabis has been shown to kill cancer cells in the laboratory and there are currently many research projects worldwide exploring whether its properties could be harnessed to help stem the growth of malignant tumours. Several of these studies are summarised in this Nature Reviews Cancer report.

However, while many of these studies show exciting early promise, killing cancer cells in a laboratory is far simpler than killing cancer cells in the human body. Until a cancer treatment has gone through the full stages of testing in animals and people, we cannot be certain that it works. Decades of cancer research has demonstrated that cancer is an incredibly complex and varied disease that varies from person to person and tumour to tumour. As a result, any claim that there could be a single cure for all cancers should be treated with a healthy dose of scepticism.

Scientific research requires robust evidence; vital for determining whether or not a potential cancer treatment is actually safe and effective. Publishing this data then allows health organisations and medical professionals to judge the information for themselves and use it for the benefit and safety of their patients.

At this time, therefore, there is not enough evidence to recommend that patients use cannabis oil as a treatment for ovarian cancer.

If you’re considering using cannabis oil, it’s also important to know the risks:

  • Although some forms of low-concentrate cannabis oil are available to buy for medical purposes in British pharmacies, cannabis itself is classified as a class B drug in the UK, meaning that it’s illegal to possess or supply it. This includes cannabis oil with a percentage of THC higher than 0.05%

As a research-based organisation, it is of paramount importance that there is reliable scientific evidence to support claims made about any cancer treatment, as lives are at stake. While it’s tempting to think that a cancer patient has nothing to lose by trying an alternative treatment, in fact, there are big risks. Taking medications outside of those recommended by your oncologist may have interactions and additional side-effects, so consult a medical professional before taking anything new.

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