Kate Middleton's Younger Brother James Middleton Gives Insight on Her Cancer Journey

James Middleton is confident his older sister is getting the best care. 

The 37-year-old gave an update on Kate Middleton's cancer journey, saying that she's doing "OK" since completing her chemotherapy treatment earlier this month. 

"It's not for me to share on her behalf on how everything is going," James said during a Sept. 26 appearance on Today, "but she's getting all the right support and focus that she needs."

And while Kate—who announced her cancer diagnosis in March— is certainly on the mend, he emphasized that her battle wasn't over just yet. As James put it, "Like anything, it takes time to process."

Of course, James' support of Kate's wellness goes both ways. In fact, the entrepreneur revealed that his sister and brother-in-law Prince William have been crucial resources for him in the past, when he's struggled with clinical depression.

"Catherine and William had both been involved in mental health charities and works of which I got help from," James explained. "So, they were a fantastic bridge for the family for me to be able to translate how I was feeling."

This isn't the first time James—who shares a 11-month-old son with wife Alizee Thevenet—has spoken out about Kate's cancer treatment. Back in March, the Meet Ella: The Dog Who Saved My Life author offered a heartwarming message for his sibling following her diagnosis announcement. 

"Over the years, we have climbed many mountains together," James wrote on Instagram at the time. "As a family, we will climb this one with you too."

And as for Kate—who made her first public appearance since completing her chemotherapy by attending a church service in Scotland earlier this month—the 42-year-old has already turned her attention to the next mountain she'll need to climb. 

"Doing what I can to stay cancer free is now my focus," the Princess of Wales—who is mom to kids Prince George, 11, Princess Charlotte, 9, and Prince Louis, 6, with William—shared in a Sept. 9 video message. "Although I have finished chemotherapy, my path to healing and full recovery is long and I must continue to take each day as it comes."

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To check in on more royal families across the globe, keep reading. 

On Sept. 9, the Princess of Wales shared that she had completed chemotherapy after being diagnose with an unspecified form of cancer earlier this year. 

"The cancer journey is complex, scary and unpredictable for everyone, especially those closest to you," she said in a video statement. "With humility, it also brings you face to face with your own vulnerabilities in a way you have never considered before, and with that, a new perspective on everything."

The royal added, "Although I have finished chemotherapy, my path to healing and full recovery is long and I must continue to take each day as it comes. I am however looking forward to being back at work and undertaking a few more public engagements in the coming months when I can."

The Princess of Wales returned to the spotlight on June 15—three months after sharing her cancer diagnosis—for the Trooping the Colour ceremony in London. She was joined by her husband Prince William and their three kids: Prince George, Princess Charlotte and Prince Louis.

The Princess Royal was discharged after a five-day stay at Southmead Hospital. Her husband, Tim Laurence, said in a statement June 28, "I would like to extend my warmest thanks to all the team at Southmead Hospital for their care, expertise and kindness during my wife’s short stay."

The younger sister of King Charles III sustained minor injuries during an incident at her estate Gatcombe Park, Buckingham Palace has announced.

"Her Royal Highness remains in Southmead Hospital, Bristol, as a precautionary measure for observation and is expected to make a full and swift recovery," the June 24 statement, shared to X, read. "The King has been kept closely informed and joins the whole Royal Family in sending his fondest love and well-wishes to The Princess for a speedy recovery."

Nearly three months after sharing her cancer diagnosis, the Princess of Wales said that she's "making good progress" with chemotherapy, though there are "good days and bad days" amid her health journey.

"On those bad days you feel weak, tired and you have to give in to your body resting," Kate wrote on Instagram June 14. "But on the good days, when you feel stronger, you want to make the most of feeling well."

She added, "My treatment is ongoing and will be for a few more months. On the days I feel well enough, it is a joy to engage with school life, spend personal time on the things that give me energy and positivity, as well as starting to do a little work from home."

On May 13, King Charles III bestowed the title of Colonel-in-Chief of the Army Air Corps to his oldest son, sparking controversy as many royal watchers believed the title would be more suited for Prince Harry, who trained and served in the military branch.

On April 26, nearly three months after sharing his cancer diagnosis, Buckingham Palace announced that Charles will return to public-facing duties. 

The queen consort attended the Royal Maundy Service on March 28 in place of King Charles III, making her the first spouse of the Monarch to continue the ancient tradition.

In a March 22 video message, the Princess of Wales shared that she'd been diagnosed with cancer after undergoing abdominal surgery in January.

"It was thought that my condition was non-cancerous. The surgery was successful," she said before noting that tests after the operation found cancer had been present. "My medical team therefore advised that I should undergo a course of preventative chemotherapy and I am now in the early stages of that treatment."

After photo agencies pulled the picture Kensington Palace shared of Kate since having her abdominal surgery on March 10, the Princess of Wales addressed claims the photo was doctored. 

"Like many amateur photographers, I do occasionally experiment with editing," she tweeted on March 11. "I wanted to express my apologies for any confusion the family photograph we shared yesterday caused. I hope everyone celebrating had a very happy Mother's Day. C."

Princess Diana's niece celebrated Mother's Day in the U.K. by sharing she and her husband Michael Lewis privately welcomed their first baby.

“It’s the joy of my life to be your mummy, little one. I love you unconditionally," she captioned her March 10 Instagram post. "Happy Mother’s Day to those who celebrate today."

After keeping up her full slate of engagements in the wake of her husband's cancer diagnosis, the palace cleared Camilla's schedule.

The Times pointed out March 2 that the 76-year-old didn't have any engagements on her calendar until March 11, when she'd be due at Westminster Abbey to observe Commonwealth Day.

The husband of Lady Gabriella Windsor and ex-boyfriend of Pippa Middleton, was found dead Feb. 25. Days later, a coroner's inquest found that he died by suicide.

While King Charles III was in the hospital for his benign prostate enlargement procedure, the royal family member was diagnosed with cancer.

"His Majesty has today commenced a schedule of regular treatments, during which time he has been advised by doctors to postpone public-facing duties," Buckingham Palace said Feb. 5. "Throughout this period, His Majesty will continue to undertake State business and official paperwork as usual.The King is grateful to his medical team for their swift intervention, which was made possible thanks to his recent hospital procedure. He remains wholly positive about his treatment and looks forward to returning to full public duty as soon as possible."

The Duchess of York's rep said in a statement on Jan. 21 that Sarah was recently diagnosed with malignant melanoma, an aggressive form of skin cancer. Several months prior, she underwent a single mastectomy to treat breast cancer.

On Jan. 14, Queen Margrethe II of Denmark made history as she officially abdicated the throne, handing the crown over to her son, now known as King Frederik the 10th. 

Kensington Palace announced on Jan. 17 that Kate Middleton underwent planned abdominal surgery and was set to remain in the hospital for 10 to 14 days.

"Based on the current medical advice," the Palace said, "she is unlikely to return to public duties until after Easter."

Amid Kate's recovery, Prince William postponed a number of engagements as he supported his family, including the couple's three children, Prince George, Princess Charlotte and Prince Louis.

Shortly after Kate's hospitalization was made public, Buckingham Palace shared that Charles "has sought treatment for an enlarged prostate."

"His Majesty's condition is benign and he will attend hospital next week for a corrective procedure," the statement added. "The King’s public engagements will be postponed for a short period of recuperation."

Princess Claire and Prince Felix of Luxembourg welcomed son Balthazar Felix Karl on Jan. 7, the first royal baby of the New Year!