Khloe Kardashian’s personal trainer Gunnar Peterson shares his four-year-old daughter has been diagnosed with cancer after having ‘nagging cough’

Khloe Kardashian has shared a heartfelt message with her personal trainer Gunnar Peterson, saying she is “praying” for him and his family after he revealed his four-year-old daughter has been diagnosed with cancer.

Gunnar, who has also trained Jennifer Lopez and Kate Beckinsale, among others, got to work on it Instagram Wednesday to share photos of daughter Monroe Vivian Peterson in the hospital, explaining that she has AML leukemia and needs chemotherapy and a bone marrow biopsy.

Gunnar described the news as a ‘life-changing turn’ and urged his 425,000 followers to hold the ‘perfect’ Monroe close to their hearts, as he revealed that he and his wife had decided to take her to hospital after noted that she had a “nagging cough” and an “on and off fever” and “bruising on her legs.”

Mother-of-two Khloe, 39, quickly responded to Gunnar’s heartfelt post, writing: ‘G! Oh my heart!! I’m so sorry for you and your family!! If I can say one thing for certain, she is a warrior, just like her mom and dad!! G I’m here if you need anything! I love you and your family and I’m praying for you all!’

Gunnar shared the devastating news on Instagram, posting a photo of him in the hospital with his daughter Monroe Vivian Peterson

Mother-of-two Khloe commented on Gunnar’s Instagram post, describing his daughter as a ‘warrior’

Gunnar also shared a photo of his young son lying in the hospital bed with him and Monroe

Alongside a photo of himself lying side by side with Monroe in her hospital bed, Gunnar began his lengthy caption: “This will be longer and very different from my usual fare. A warned man is warned. Life-changing twist.

“Our perfect four-year-old daughter, Monroe Vivian Peterson (MVP, see that?!) had a nagging cough, intermittent fever, and strange pallor last week. Typical kid stuff.

“Then my wife noticed bruising on her legs, which was strange because she hadn’t been very active due to the other symptoms, and they took her to the hospital,” he continued.

Gunnar went on to list what doctors had discovered and the next steps for Monroe.

‘Four days ahead: white blood cell count KO’d. Platelets in the toilet. Hemoglobin count lower than in a football final. Hematocrit in the front row of the battle bus. Needs immediate transfusion(s). A bone marrow biopsy should be performed. Flow cytometry. Spine(s). Chemotherapy. And finally, the Make-A-Wish candidate.

“She has AML leukemia. How the f*#! have we arrived here?!?! More to come as we navigate the nightmare… Our Warrior Princess will crush this! She even said it herself!’ he said.

“Please keep our daughter and our family – immediate and extended – in your hearts, thoughts and prayers.

“As we all know, you never know what someone is going through. There are too many thanks already owed, so I will spread them as this unfolds,” Gunnar added.

Khloe’s mom Kris Jenner responded to Gunnar’s post, saying she’s “praying” for his “baby G”

Dwayne “The Rock” Johnson told Gunnar “we’re always here” in a sweet Instagram comment

Gunnar said his daughter suffered from a ‘nagging cough’ and ‘on and off fever’

The four-year-old has been diagnosed with AML leukemia and is scheduled to receive chemotherapy

Several famous faces and clients of Gunnar joined Khloe in commenting on the post, including her older sister Kim Kardashian who wrote, “We are all praying for you. We love you,” alongside a white heart emoji.

Their mother Kris Jenner said, “My family and I are praying for your baby G, we love you very much and lift her up in the name of Jesus….”

Dwayne “The Rock” Johnson wrote, “We’re always here, brother. Always.

“She will crush this as she herself stated,” and basketball player Quinn Cook wrote, “MVP you got this! I’m praying so hard for you right now.’

Savannah Chrisley added, “I love you and your sweet family. You have an army behind you! Let’s start fighting now!’