Tag archives: breed identification

The Complexities of Genetic Testing and Counseling: Accuracy, Penetrance and Validity, Oh My!

The Complexities of Genetic Testing and Counseling: Accuracy, Penetrance and Validity, Oh My!
Photo showing the diversity of coat colors and patterns within the Australian Shepherd.

As a laboratory that works directly with breeders and dog owners, Paw Print Genetics (PPG) is often asked to reassure the customer that our tests accurately determine whether a dog will get a disease.  The customer is actually asking a couple of different questions; one involving the accuracy of the test itself and one regarding the clinical validity of the test. It is important to understand the questions being asked so that the answers make sense.

The first question being asked is: Does the test perform accurately to determine if a dog is normal/clear, a carrier of one copy of the mutation or at risk, having two copies of the mutation. At PPG, our tests are extensively validated and must show 99.9% specificity and sensitivity before being available for ordering. Sensitivity is defined as the proportion of samples with a known mutation that are correctly classified/identified as carrier or at risk by their genotypes. Specificity is defined as the proportion of samples with no known mutation that are correctly classified/identified with the wildtype (normal) genotype for the disease.  This all refers to whether the test result accurately reflects the true genotype of the individual. At ...

Happy New Year, from the CEO of Paw Print Genetics

Happy New Year, from the CEO of Paw Print Genetics

As one year closes and we begin a new, I like to take this time to reflect on the accomplishments of Paw Print Genetics (PPG).  It still amazes me that in such a short time (PPG was founded in 2012), we have become the most trusted laboratory in the industry.  Even if we didn’t do the testing, breeders come to us for advice and help in figuring out the sometimes complex nature of genetic testing results.  Perhaps this is because we are so accessible. PPG employs PhD geneticists and licensed veterinarians who are on-staff and in our offices, available by phone for consultation about your breeding program, a particular dog that needs testing, or a specific result.  Providing genetic counseling and a helpful ear is so important for assisting breeders in navigating the ever-changing world of canine genetics.

As in previous years, PPG had many accomplishments this year. Only a few are highlighted in the following paragraphs. For me, our biggest accomplishment is how fast we continue to grow and the number of new breeders who tried us for the first time this past year.  These new customers are finding us mostly from you – our current ...

Paw Print Genetics - Setting the Bar for Standards in Canine Genetic Testing

Paw Print Genetics - Setting the Bar for Standards in Canine Genetic Testing

Paw Print Genetics is special and I am not just saying that because I am the CEO. There is no other canine genetics laboratory like PPG. Seriously!  Paw Print Genetics is the only laboratory that has implemented human-based testing standards. What does this mean?  It means that PPG tests each mutation region twice with two different methods to ensure the highest accuracy possible. No laboratory can boast 100% accuracy, but PPG achieves 99.9% accuracy each and every day. This means that you can trust your results and use them confidently in your breeding program. In addition, PPG employs both PhD Geneticists and licensed Veterinarians on staff, in our offices, that oversee the testing and report the results. You can also call and speak to them if you have any questions or concerns. Finally, I am the only board certified geneticist in the canine field; I am board certified by the American Board of Medical Genetics. These three aspects - the 'double check testing', having geneticists and veterinarians on staff, and having a board certified geneticist on staff - are equivalent to the requirements found in human genetic testing laboratories.

In addition to our high testing standards and customer access ...

Season’s Greetings and Happy New Year from Paw Print Genetics

Season’s Greetings and Happy New Year from Paw Print Genetics

I like to use this time of year to reflect on the challenges and accomplishments of the past year. Paw Print Genetics (PPG) was founded only a few short years ago, launching our first set of canine disease tests in 2013.  Our commitment to excellence in both testing accuracy and customer service quickly propelled us to the top of the canine testing industry. In no other testing laboratory can you find the highly skilled staff of veterinarians and PhD geneticists eager to help answer your questions and guide you to the useful and informative testing that you need for your breeding program. Aiming to be the best, our web-based ordering system is unparalleled in the industry.  This didn’t happen by chance, as we continuously talked to our customers about how we could improve our systems and deliver a product that was user friendly and met their high standards, comparable to their own breeding principles.

This year was not without its challenges, but overcoming obstacles makes us stronger.  We ended litigation over PRA-prcd and CEA, allowing us to be listed as an approved laboratory with the Orthopedic Foundation for Animals. Fighting for our customers’ rights to have a ...

Paw Print Genetics uses the Latest Technologies to bring Customers Enhanced DNA Profiles and Paternity

Paw Print Genetics uses the Latest Technologies to bring Customers Enhanced DNA Profiles and Paternity

Providing a unique DNA profile to identify a dog or performing paternity to qualify a sire is not new. In both humans and canines, these services have been around for decades, but so has the technology.  The use of microsatellite markers has been the mainstream technology for identifying people and dogs since the early 1980’s.  However, these particular markers are best used to exclude a suspect or exclude a sire, but trying to prove identity or prove that a sample is from the one and only possible sire is much more difficult.

Welcome to the 21st century!  The old microsatellite markers were just not good enough, in some cases, to distinguish a sire from his sons or brothers from one another.  And in true Paw Print Genetics fashion, we are just compelled to do everything better than anyone else! Introducing single nucleotide polymorphisms, or SNPs. These are small changes in the DNA that tend to be different between individuals, including relatives.  Paw Print Genetics is using a proprietary set of 99 distinct SNPs found in different locations throughout the canine genome to uniquely identify individuals and better qualify sires.

Take a look at the ‘heat map’ ...

A Letter from our CEO

A Letter from our CEO

Since the announcement that we ended our litigation over the gene patents for  progressive retinal atrophy (prcd), collie eye anomaly, congenital stationary night blindness in Briards, and retinal dysplasia/oculoskeletal dysplasia in Labradors, there has been a huge outpouring of encouragement and congratulations from our customers. At Paw Print Genetics, we are all very touched by this support.

I have also received a number of emails from customers worried that we may raise our prices because of this new sublicense. I have even seen this question debated on Facebook and understand the concern.  As you can imagine, the lawsuits from the past couple of years were expensive. We paid hundreds of thousands of dollars in legal fees to support our cases.  Last year, we won our case in Federal court and the patent for exercise-induced collapse (EIC) was invalidated. This allowed our customers to register their EIC results with the Orthopedic Foundation for Animals (OFA), but also cleared the way for other laboratories to offer this test without fear of litigation, even though they did not participate in the lawsuits or help fund our cause. As we are recovering from these huge litigation costs, we are doing all ...