CD19
From haematologyetc.co.uk
- Summary
- CD19 expressed through most stages of B-cell development and is considered a pan b-cell marker i.e. present at early B-cell commitment until plasma cell stage
Normal expression and function
CD19 forms part of the normal B-cell receptor, and plays a major role in the recruiting and activating signalling proteins involved in B-cell activation. it reliably expressed by most normal B lymphocytes and also by follicular dendritic cells. Expression is acquired very early during normal B-cell development and tends to increase as B cells mature before becoming lost during the transition to plasma cells.
Diagnostic role
- xxxxx
Other relevant information:
xxxxx
SUMMARY TABLES
Note The colour and % refer to the proportion of cases expressing the marker. Additional comments on strength, or site of expression (if relevant) are given below the table. For full details of key click here. For further information about a particular disease state click <I> adjacent to the condition name
Expression in primitive cell types | |||||||
---|---|---|---|---|---|---|---|
AML | CMML | B ALL | Burkitt | T ALL | ETP ALL <I> | MPAL <I> | Hgns <I> |
? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% |
Notes: xxxxx
Expression in mature B cell neoplasms | |||||||
---|---|---|---|---|---|---|---|
CLL | MCL | FL | MZL | HCL | DLBCL | LPL | PCL |
? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% |
Notes: xxxxx
Expression in mature T cell neoplasms* | ||||||
---|---|---|---|---|---|---|
ATLL | CTCL/Sezary | T-PLL | T-LGL | NK-LGL | ||
? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% | ? <5% 5-20% 20-40% 40-80% 80-100% |
Notes: xxxxx