This project examined the causes of non-Hodgkin lymphoma.  If you have been diagnosed with or treated for non-Hodgkin lymphoma (NHL), all we will need is your permission to obtain a small sample of tissue from the hospital where you were diagnosed or treated. This tissue may have been removed during a surgical or biopsy procedure.

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To provide permission, you simply read and sign a consent and HIPAA form and mail it back to us. With your signed consent, we can then request the tissue from the appropriate facility.

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Visit the project page to learn more about participating.

In support of research on COVID-19, the CTS and many other studies agreed to work together in the new “COronavirus Pandemic Epidemiology (COPE)” Consortium. 

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This project was open to all California Teachers Study participants who wanted to download the COVID Symptom Study (C-19) app. Those who chose to participate in the app could also elect to have their data shared with the California Teachers Study. Combining data from this new study with the data CTS participants have provided over the years can support researchers in studying what affects COVID-19 risk, symptoms, and how people recover.

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Visit our page on the CTS response to COVID-19 to learn more.

This collaboration between the California Teachers Study & The Microsetta Initiative aimed to understand why people are exhibiting different responses to COVID-19. By collecting samples and survey data from participants who may or may not have been exposed to COVID-19, this project is trying to better understand if and how our microbiome may play a role in those varied responses.  

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A small group of participants in Southern California were invited to participate in this project by providing blood, saliva, and stool samples. 

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Visit the project page to learn more about this study.

The 6th study questionnaire collected updates on participants' health history,  sleep habits, hormone use, physical activity, medications, and family history of cancer. It also included additional questions to support new areas of research, including genetic testing, water use, financial stress, medicinal cannabis use, and sexual orientation and gender identity.  

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Visit the project page to learn more about Questionnaire 6.

This project was designed to expand our understanding of proteins found in the blood. One such protein has been linked to a condition called MGUS (Monoclonal Gammopathy of Unknown Significance). MGUS does not cause symptoms, is quite common in the general population, and may be an indirect marker of one's health status.

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We contacted some of our participants to ask for permission to obtain participant medical records from a recent hospitalization. Visit the project page to learn more about this study.

Despite many decades of investigation, very little is known about the causes of Parkinson’s disease, a debilitating movement disorder.  With the help of American Parkinson Disease Association, our team of collaborators at USC, UCLA and Claremont Graduate University has conducted two follow up projects with CTS participants who indicated on questionnaires that they had Parkinson’s disease. This is the second of those follow-up projects.

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The goal of this project was to identify possible risk factors for Parkinson’s disease, including whether certain genetic or lifestyle factors make some people more or less likely to develop Parkinson’s disease. 

This project aimed to expand our research to understand the biological changes that occur in cancer tissue. Tissue samples permit researchers to look for changes in the DNA or protein that might have occurred in cancer – we call these changes biomarkers. Identifying biomarkers helps us understand why cancers develop and why they progress. New technologies now permit us to carefully examine the cancer tissue for biomarkers and other key changes that occur. 

This project invited approximately 30,000 CTS participants to donate a small blood sample that we will use for future research. New research is searching for biomarkers in blood that can help to detect cancer earlier and predict who is at higher or lower risk of developing cancer. By combining the information we can get from new biomarkers with the vast amount of health and lifestyle information that CTS participants have already provided, we hope to find even better ways to fight and prevent cancer and other diseases that affect women. This small blood donation could lead to big discoveries in the future.