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Gene & pathway reference · FROM DR. PURSER’S TEACHING

ALPL

ALPL encodes tissue-nonspecific alkaline phosphatase, an enzyme important to bone and tooth mineralization and vitamin B6 metabolism. Persistently low alkaline phosphatase can deserve a different evaluation from a general nutrient deficiency.

Based on teaching by Dan Purser, MD. How we prepare these guides

Updated Sep 23, 2026 · Educational reference

THE TEACHING CONNECTION

B6, bone mineralization and alkaline phosphatase

B6, bone mineralization and alkaline phosphatase

ALPL encodes tissue-nonspecific alkaline phosphatase, an enzyme important to bone and tooth mineralization and vitamin B6 metabolism. Persistently low alkaline phosphatase can deserve a different evaluation from a general nutrient deficiency.

Putting the pieces together

Dr. Purser’s notes bring ALPL into the B6 and bone-health conversation. A common marker such as rs4654748 is not itself a diagnosis of hypophosphatasia. Bone pain, poorly healing fractures, early tooth loss and repeatedly low alkaline phosphatase warrant clinical assessment; automatically adding P-5-P can miss that distinction.

A question to bring to your visit

Do my alkaline phosphatase results and bone or dental history call for an ALPL-focused evaluation?

Variant lookup

These names can help you find an entry on your original genetic report. Seeing a name here does not tell you whether it affects your health or whether you need treatment.

Names you may see

Tissue-nonspecific alkaline phosphatase