This section may not fit perfectly to all possible indications for cellular therapy. Please select the response that is most applicable to the indication for treatment.

Question 12: What was the best response to the cellular therapy?

This section collects the data known as “best response to cellular therapy”. The purpose of this section is to report the recipient’s best response to the planned course of cellular therapy. This section applies to both malignant and non-malignant diseases and disorders. If the recipient received a prior HCT, do not report the response to the HCT, a separate evaluation to establish best response after the cellular therapy is required.

Combined follow up
If the recipient receives a subsequent HCT, do not report the best response to the HCT here. The reported best response to the cellular therapy was previously reported and can no longer be evaluated once a recipient has a subsequent HCT. Continue to report best response achieved from the cellular therapy.

For malignant diseases (including solid tumors), appropriate responses are:

  • Continued complete response
  • Complete response
  • Partial response
  • No response
  • Disease progression

For non-malignant disorders and cardiovascular, musculoskeletal, neurologic, ocular or pulmonary disease, appropriate responses are:

  • Normalization of organ function
  • Partial normalization of organ function
  • No response
  • Worsening of organ function

If the indication is infection, the appropriate responses are:

  • Complete response
  • Partial response
  • No response

Table 1. Examples of best response to cellular therapy.

Indication Applicable response options Partial Response Complete Response
Cardiovascular Disease, Musculoskeletal Disorder, Neurologic Disease, Ocular Disease, Pulmonary Disease Do not answer best response - -
GVHD prophylaxis (with HCT) Do not answer best response - -
GVHD treatment (post-HCT) Complete Response, Partial Response, or No Response Improvement but not resolution of symptoms, Remains on immune suppression Improvement but not resolution of symptoms, or Remains on immune suppression
Immune Reconstitution (post-HCT) Complete Response or No Response - CD3 >200/mm3
Infection prophylaxis Do not answer best response - -
Infection treatment Complete Response, Partial Response, or No Response Decrease in infectious burden without resolution Undetectable infection
Malignant Hematologic Disorder Continued complete response, Complete Response, Partial Response, Progression, or No Response Refer to the response criteria as published in the disease specific manual Refer to the response criteria as published in the disease specific manual
Non-Malignant Disorder Normalization of organ function, Partial normalization of organ function, No response, Worsening of organ function Persistent Disease Resolution of Disease Process
Other Do not answer best response - -
Prevent disease relapse Do not answer best response - -
Solid Tumor Continued complete response, Complete Response, Partial Response, No Response, or Disease Progression Improvement in disease burden, but with persistent disease No evidence of disease
Suboptimal donor chimerism (post-HCT) Complete Response, Partial Response, or No Response Increase in chimerism but not 100% donor 100% donor chimerism

If the recipient relapses / progresses post-infusion and receives therapy for the disease relapse / progression, the response to that additional therapy should not be reported in this section. The best response prior to the relapse/ progression should be reported.

Question 13-14: Was the date of best response previously reported?

If the best response to cellular therapy was first documented during the current reporting period, report No. If the best response was achieved during a previous reporting period (and therefore reported on a previous post-CTED form), report Yes.

Do not report Yes if completing this form for the 100 day reporting period.

Combined follow up
If the recipient receives an HCT after a cellular therapy and the best response to the cellular therapy was previously reported, it can no longer be evaluated once a recipient has a subsequent HCT. It is appropriate to report Yes for this scenario on the 100 day report.

If the date of best response has not been reported, select No and report the date (YYYY-MM-DD). The date of best response should be the first date all criteria were met.

If the exact date is unknown, please view General Instructions, General Guidelines for Completing Forms for more information on reporting partial and unknown dates.

Section Updates:

Question Number Date of Change Add/Remove/Modify Description Reasoning (If applicable)
12 1/19/4 Add Added text in red to the first blue box above question 12: If the primary disease reported is Acute Lymphoblastic Leukemia (ALL), Chronic Lymphocytic Leukemia (CLL), Hodgkin Lymphoma (HL), Non-Hodgkin Lymphoma (NHL), or Multiple Myeloma (MM) and there is a corresponding disease form, best response is not reported on this form. Additional clarification for TED level reporting.
Last modified: Jan 19, 2024

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