
International Pachyonychia Congenita Research Registry
Our most powerful asset to help patients and to find meaningful treatments for PC

If you think you (or someone you care for) has PC, please join our Patient Registry.
Participating in the registry is the single most important thing a patient can do to advance research and drug development for PC and other similar rare diseases. What’s more, if you have lived your life without a name or reason why you have painful calluses on the bottoms of your feet, or if you are a parent of a young child with thickened nails, joining our Patient Registry is the first step to receiving a correct diagnosis and becoming part of a knowledgeable and caring community.
Patients joining the diagnostic registry are asked to answer questions about their condition and submit photos of their symptoms. This takes about 30 minutes.
Once your case is reviewed, if appropriate, we mail a saliva kit for collecting a sample for diagnostic genetic testing. The results from this test are reviewed alongside the patient’s answers and photos by our expert genetics and medical panel.
If you are confirmed as having PC or another similar rare skin condition, you are considered fully enrolled in the International Pachyonychia Congenita Research Registry. PC Project is the only organization in the world to hold a Physician Verified Patient Registry for Pachyonychia Congenita and similar diseases with painful plantar keratoderma, (thick skin or calluses on the bottoms of the feet).
We hold your data as a medical record file and your personal information is kept strictly confidential and protected by privacy laws.
Benefits of joining our patient registry
- FREE, confidential, state-of-the-art genetic testing to confirm your diagnosis, if needed
- FREE, one-on-one confidential consultation with a leading PC dermatologist, if needed
- Ongoing support for disability forms for insurance, parking permits, disability claims, etc.
- Access to the most up-to-date advancements in research, treatments, and products for to your specific condition
- Notification about about clinical trials for PC or other rare painful PPK conditions
- Ability to connect with others with PC from around the world to share insights and coping strategies
- Access to the private PC Patient Chat Group on Facebook
- Reassurance that you are part of the solution to do everything possible to help find treatments and a cure for PC
Let us help you today!
Please note: Every patient needs their own account with their unique username and password to access the registry questionnaire. If needed, the same email can be used for multiple patient accounts. For example, if a physician or parent is registering more than one patient/family member, they will need to create an account for each person with PC, but they can still use the same email if the individual patient doesn’t have their own.
While diagnostic genetic testing especially is still very expensive, there is currently no charge for participating in the registry or receiving any service provided by PC Project. All our programs and services are supported by givers to our charity.
What about babies and small children? Should I register my children with PC?
If a baby or small child develops signs of PC and neither parent has PC, the parent should register the child and our team will review the case to see if we can test for PC. We have assisted saliva kits especially made for painlessly collecting samples from little children.
If a child is born to a person with a known PC mutation, PC Project has a “wait and see” policy. If the child has PC, the symptoms will not hide. If symptoms of PC present, we strongly encourage you to enroll your child in the registry. Our team will review the case and we can provide letters for schools and other support as needed.
Unless something is uniquely different about your child’s condition, you can be assured, because of the pattern of PC inheritance, that your child has the exact mutation as the parent and testing will not be needed. If the parent has never been tested, we will then test the child and/or the parent so the family can know what type of PC and mutation they have.
NOTE: If you are already connected with PC Project or you have already registered, sign in and click the “Forgot your password” link or contact PC Project for your account details. If you previously joined our patient registry, some of your existing answers will pull into the questionnaire. At that point, you will be able to answer the new questions and update your existing information.
Joining the registry changed my life.
K6A PATIENT

Everyone deserves a correct diagnosis
How Our Patient Registry Helps Research
The International Pachyonychia Congenita Research Registry is central to our success in advancing research and developing therapies for PC. Data from the registry has literally changed what was known about PC and we continue to learn. De-identified registry data is shared with researchers and published in medical and scientific journals.
And now, as we are moving into drug development for potential treatments, individuals in our patient registry are notified and offered the opportunities to participate in applicable studies, clinical trials, and other research projects. Pharmaceutical companies regularly ask us how many patients we have in our registry. They need to know if they develop a treatment that 1) there are enough patients to participate in trials and 2) if there are patients out there who will use (buy) the treatment. In other words, the higher our registry numbers, the more attractive PC is to drug developers and pharma companies.
PC is rare. Each patient and their information counts. Be counted for a cure!
Benefits for others
- Your unique information will add to the growing knowledge, profile, and possibility of finding effective treatments and ultimately a cure for PC
- You will help with outreach to others by connecting, building, and strengthening the community of people with this rare condition
- Research done now will help those with PC and future generations
How to participate
- Step One: Register/sign in on this page. This will allow you access to the International Pachyonychia Congenita Research Registry which includes a Consent form and Questionnaire (an IRB approved (WIRB 20040468) registry), along with the ability to upload photos of your symptoms. You can save as you go and update previous answers at any time. The Consent Form protects your privacy. The Questionnaire gathers important details that distinguish PC from other similar conditions, and helps to identify specific characteristics of each type of PC. If you are not certain about an answer, you may skip that question.
- Step Two: Take photos of your symptoms as shown on a page in the registry process. You can upload your images online in the registry portal, or if you prefer, you may email the photos to PC Project at info@pachyonychia.org. Photos of the PC symptoms are very important in reviewing your case.
- Step Three: When your Consent Form, Questionnaire, and Photos are submitted into the secure database and received by PC Project, we will have an intake call with you to review your information and to discuss possible next steps.
- Step Four: If referred for genetic testing, you will then be sent by mail a small, special saliva test kit (no travel required). Usually, only saliva is needed and from only one family member with PC. The sample is collected by spitting into the vial in the kit. You will then mail the the kit back in the envelope provided. Genetic testing is complex and time-consuming — it is not like a sugar test or pregnancy test – and can take many months to be completed.
- Step Five: When the confirming results are received, our PC Genetics Team of experts will review your case. Then, a full genetic testing report is provided to you with information specific to your condition. This will be your personal and private medical record. You may find the report valuable in working with your local physician or other medical providers, as well as for school personnel, employers, disability applications, or other special needs. All your information is held confidentially by PC Project and research data is reported anonymously.

If you are a medical professional: We have a PC Genetics Team of experts who meets monthly to review and verify cases. We take referrals from all medial professionals and our team is available to review and discuss cases with you.
Help your patient get a correct diagnosis.
Why every person who thinks they have PC should join the free, confidential Patient Registry
- To verify a definite diagnosis of PC
- To understand the implications of PC
- To pursue best treatment practices for PC
- To connect with others who understand and live with PC
- To add to the collected data about PC
- To better understand what is true about PC and what is not
- To gather a body of genetically confirmed patients to participate in studies and clinical trials
- To educate scientists and physicians about PC
- To share advice and suggestions for taking care of PC
- To build a PC community
- To show drug developers there are many people with PC and other similar rare skin diseases who need treatments