cured of his kidney disease; This is a spontaneous report received from a contactable reporter(s) (Consumer or other non HCP). The reporter is the patient.  A 68 year-old male patient received bnt162b2 (BNT162B2), administered in arm right, administration date 24Mar2021 16:00 (Lot number: EP6955) at the age of 68 years as dose 2, single and administered in arm left, administration date 11Sep2021 (Lot number: FC3184) as dose 3 (booster), single for covid-19 immunisation. Relevant medical history included: "Chronic kidney disease" (unspecified if ongoing), notes: Diagnosed about 4 years ago; "liver transplant recipient" (unspecified if ongoing), notes: He is a liver transplant recipient. There were no concomitant medications. Vaccination history included: Bnt162b2 (Dose 1, Batch/lot number: EN6203, Anatomical location: left arm, Onset time: maybe 14:00, He mentions he took some antibiotics after the first dose), administration date: 05Mar2021, when the patient was 68 years old, for Covid-19 immunization. The following information was reported: THERAPEUTIC RESPONSE UNEXPECTED (non-serious), outcome "unknown", described as "cured of his kidney disease". Relevant laboratory tests and procedures are available in the appropriate section.  Additional Information: The caller is calling in regards to the covid vaccine. The caller had chronic kidney disease for the last 4 years. He had his first shot on 04Mar2021 and second shot on 24Mar2021. He was a transplant person so he had his third shot (booster shot) on 11Sep2021. A few days after his first shot, clarified as 08Mar2021, he had bloodwork done and his creatinine level was 44.  He had his second shot on 24Mar2021 and then had blood work done on 2Mar2021 and his Creatinine was at 59, which was just borderline of having no kidney disease. His level was now well above that. He states once it's above 60, they don't count it after that. He was just trying to figure out what all of a sudden is the cause for the turn around. He started drinking Zero water in May, but it seems all of it changed after the shot. He thought Pfizer might be interested to know that as a by-product, he was cured of his kidney disease. He was trying to think of what has happened and the covid shot is the only thing he can come up with. Caller asks if there has been other incidences? He figured this was information Pfizer would need. He is really happy that all of a sudden he is cured. The patient's Medical history was He takes daily blood pressure stuff, but it's  stuff that he has taken for a while, it's nothing new that was started within the 2 weeks leading up to the first dose. No Additional Vaccines Administered on Same Date of the Pfizer Suspect administered. The patient did not received any other vaccines within 4 weeks prior to the first administration of covid 19 vaccine. He mentions he took some antibiotics after the first dose. He wonders if that had anything to do with it. He makes the comment this is weird and wonders why his creatinine levels changed.  Patient had a liver transplant recipient and that is the reason he had the third shot. The patient had a relevant test for blood work (Creatinine)  No follow-up attempts are possible. No further information is expected.