About Calvin Hummel

Congratulations Calvin! 

On February 1, 2016 Calvin received his new kidney from Dad! 

Welcome to the fundraising campaign for COTA in honor of Calvin Hummel! Please explore the website and learn a bit about Calvin, his condition, and the Hummel family. Watch the video below to see just how far he has come. 


A Little Bit About Our Little Guy

Calvin is the son of Garrett and Heidi Hummel.  Born on March 3, 2014, Calvin is now almost two years old. The first ten months of his life were blissful ignorance and time with a 'normal' baby. In January of 2015, after being hit hard by the cold and flu, a nurse at the emergency room of Central DuPage Hospital recognized the signs of kidney failure in Calvin. He was diagnosed with Infantile Nephrotic Syndrome as a result of a mutation on the WT1 gene. Thankfully the mutation had not yet formed tumors on his kidneys as it usually does and on April 1, 2015 the surgeons at Lurie Children's Hospital in Chicago successfully removed Calvin's kidneys before tumors could form and cause a whole host of other complications.

On February 1, 2016, exactly 10 months after removing the diseased kidneys, Calvin received his new kidney from his dad! Thank you to all our friends, family, and strangers who have helped us through this time. Recovery is just beginning and the Hummel family is looking forward to getting back to semi-regular life and enjoying snuggles with new little brother Henry!

Over $80,000 has been raised by Calvin's volunteers with COTA to help with transplant related expenses. 

Fast Facts

  • Calvin's condition is a genetic mutation. Both Heidi and Garrett have had genetic testing done and are not carriers of this mutation. That means that any future children have an extremely low chance of developing the same mutation.
  • To receive his transplant, Calvin must weigh at least 10kg or 22lbs. As of 11/12/2015 Calvin has reached that goal! He will continue to be fed a high calorie diet through a feeding tube to aid in weight gain.
  • Calvin is fully insured. The goal of these fundraising efforts are to set up a lifetime fund to assist with all transplant-related expenses.  This fund will be available for a lifetime no matter what happens with life or insurance down the road.
  • Just like Calvin will never 'grow out' of having a chronic kidney disease (even after transplant), he will never 'grow out' of his COTA benefits and can continue fundraising as long as he would like. Calvin is a COTA kid for life. 
  • Calvin was successfully transplanted on February 1st, 2016!


With the cost of a transplant often exceeding $500,000, many transplant families are unable to shoulder the financial burden of such a procedure.  The Children’s Organ Transplant Association (COTA) is a national charity dedicated to organizing and guiding communities in raising funds for transplant-related expenses.  In Chicagoland, volunteers are raising funds for COTA in honor of transplant patients like local baby, Calvin Hummel.