(HealthDay News) -- Here are the latest clinical trials, courtesy of CenterWatch:

Diabetes Mellitus Types 1 and 2

The National Jewish Medical and Research Center in Denver, Col. is conducting two clinical research studies to evaluate an investigational inhaled insulin as an alternative to insulin injections in people with diabetes and breathing problems.

You may qualify for one of these clinical studies if you are between the ages of 18-75, have type 1 or 2 diabetes for more than one year, received 2 or more insulin injections per day and have breathing problems such as asthma or COPD (including emphysema or chronic bronchitis).

The research site is in Denver.

More Information

Please see http://www.centerwatch.com/patient/studies/cat55.html.

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Hepatitis B

This study is designed to evaluate the safety and antiviral activity of tenofovir disoproxil fumarate (DF) compared to Hepsera for the treatment of HBeAg negative chronic hepatitis B.

A participant must meet the following inclusion criteria to be eligible for participation in this study: chronic HBV infection defined as positive serum HBsAg for at least 6 months, 18 through 69 years of age, inclusive.

The research site is in New York City.

More Information

Please see http://www.centerwatch.com/patient/studies/cat79.html.

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Colorectal Cancer

A study is underway to evaluate first-line treatment for patients with metastatic colorectal cancer.

Eligible participants must be 18 years of age or older and must be ambulatory and have an ECOG performance status of <2.

The research site is in Worcester, Mass.

More Information

Please see http://www.centerwatch.com/patient/studies/cat426.html.

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