Chromosome 19q Status (Brain (V9 2023+))

Note 1 Physician Statement

• Physician statement of Chromosome 19qp deletion/LOH can be used to code this data item when no other information is available.

Note 2 Applicable histologies

• Below is a list of histologies/terms for which the Chromosome 1p test is commonly done. If the test was done, record the results, regardless of the histology. If the histology is not listed among those for which the Chromosome 1p test is commonly done, and the test result is not readily available, assume it was not done and code 9 for unknown.

• 9382/3 Oligoastrocytoma (anaplastic, or NOS)

• 9400/3 Diffuse astrocytoma (IDH mutant, IDH wild type, or NOS)

• 9401/3 Anaplastic astrocytoma (IDH mutant, IDH wild type, or NOS)

• 9411/3 Gemistocytic astrocytoma, IDH mutant

• 9424/3 Anaplastic pleomorphic xanthoastrocytoma

• 9430/3 Astroblastoma

• 9440/3 Glioblastoma (epithelioid, IDH wild type, or NOS)

• 9441/3 Giant cell glioblastoma

• 9442/3 Gliosarcoma

• 9445/3 Glioblastoma, IDH mutant

• 9450/3 Oligodendroglioma (IDH mutant and 1p/19q codeleted, or NOS)

• 9451/3 Anaplastic oligodendroglioma (IDH mutant and 1p/19q codeleted, or NOS)

• 9505/3 Anaplastic ganglioglioma

• 9530/3 Anaplastic (malignant) meningioma

Note 3 Related data item

• See also 3801 Chromosome 1p Loss of Heterozygosity (LOH).