Received Mar 18, 2025
| Type | Name | Manufacturer | Dose | Lot | Route / Site |
|---|---|---|---|---|---|
| COVID19 | COVID19 (COVID19 (PFIZER-BIONTECH)) | PFIZER\BIONTECH | 4 | FP4554 | IM / LA |
| COVID19 | COVID19 (COVID19 (PFIZER-BIONTECH)) | PFIZER\BIONTECH | 4 | — | — |
Thrombocytopenia; tested positive for the JAK2 gene; platelet count started rising; This is a spontaneous report received from a Consumer or other non HCP from medical information team, Program ID. A patient (age and gender not provided) received BNT162b2 (BNT162B2), on 18Jul2022 as dose 4 (booster), single (Batch/Lot number: unknown) for covid-19 immunisation. The patient's relevant medical history and concomitant medications were not reported. Vaccination history included: Bnt162b2 (DOSE 1, SINGLE; Lot number: unknown), for Covid-19 immunization; Bnt162b2 (DOSE 2, SINGLE; Lot number: unknown), for Covid-19 immunization; Bnt162b2 (DOSE 3 (BOOSTER), SINGLE; Lot number: unknown), for Covid-19 immunization. The following information was reported: PLATELET COUNT INCREASED (non-serious) with onset 2023, outcome "unknown", described as "platelet count started rising"; THROMBOCYTOPENIA (medically significant) with onset Apr2024, outcome "unknown"; GENE MUTATION IDENTIFICATION TEST POSITIVE (non-serious) with onset Apr2024, outcome "unknown", described as "tested positive for the JAK2 gene". The patient underwent the following laboratory tests and procedures: Janus kinase 2 mutation: (Apr2024) Positive, notes: tested positive for the JAK2 gene; Platelet count: (Jul2023) rising. Clinical course: The patient had 4 Pfizer covid vaccines with the last one being administered on 18Jul2022. Exactly one year later, the patient's platelet count started rising. In Apr2024, the patient was diagnosed with essential thrombocytopenia and tested positive for the JAK2 gene. The patient would like to know if anyone else had reported this condition to Pfizer after having the Pfizer covid vaccine. The information on the batch/lot number for BNT162b2 will be requested and submitted if and when received.
Test Date: 202404; Test Name: JAK2 gene; Test Result: Positive ; Comments: tested positive for the JAK2 gene; Test Date: 202307; Test Name: platelet count; Result Unstructured Data: Test Result:rising