
Reputedly so, but it depends what the people are actually allergic
to: is it the hair, the saliva or the dander? Have they actually been properly tested for allergies by their GP?
The best way to find out if a breed is suitable is to visit a breeder's house and spend a couple of hours with the adult dogs in the home. Any immediate reaction will be apparent.
They may find
this article, pointing out that there's no such thing as a hypo-allergenic breed, helpful.
This
Kennel Club page also gives sensible advice.