Disease progression is defined using the 2007 revised Cheson et al. criteria that is at least 50% increase in sum of the product of the diameters (SPD) of target measurable nodal lesions over the smallest sum observed, or >= 50% increase in greatest transverse diameter (GTD) of any nodal > 1 cm in shortest axis, or >= 50% increase in the SPD of other target measurable lesions over the smallest sum observed, any new bone marrow involvement, any new lesion, lymph node with long axis is > 1.5 cm or if both long and short axes are > 1 cm, PET positive if patients with no pretreatment PET scan or when PET scan was positive before therapy. Progression-free survival is measured from date of registration to date of first observation of progressive disease, or death due to any cause. Patients last known to be alive and progression-free are censored at date of last contact.

Eligible and evaluable HIV-negative patients who started initial ABVD were included in the analysis regardless the response-adapted therapy after 2 initial cycles of ABVD was administered.

Disease progression is defined using the 2007 revised Cheson et al. criteria that is at least 50% increase in sum of the product of the diameters (SPD) of target measurable nodal lesions over the smallest sum observed, or >= 50% increase in greatest transverse diameter (GTD) of any nodal > 1 cm in shortest axis, or >= 50% increase in the SPD of other target measurable lesions over the smallest sum observed, any new bone marrow involvement, any new lesion, lymph node with long axis is > 1.5 cm or if both long and short axes are > 1 cm, PET positive if patients with no pretreatment PET scan or when PET scan was positive before therapy. Progression-free survival is measured from date of registration to date of first observation of progressive disease, or death due to any cause. Patients last known to be alive and progression-free are censored at date of last contact.

Eligible and evaluable HIV-negative patients who were PET-positive after 2 cycles of ABVD were included in the analysis.

Measured from date of registration to date of death due to any cause. Patients last known to be alive and are censored at date of last contact.

Eligible and evaluable HIV-negative patients who started initial ABVD were included in the analysis regardless the response-adapted therapy after 2 initial cycles of ABVD was administered.

Complete Response (CR) is a complete disappearance of all disease with the exception of the following. If no PET scan or when the PET scan was positive before therapy, a post-treatment residual mass of any size is permitted if it is PET negative. If the PET scan was negative before therapy, all nodal masses at baseline must have regressed. No new lesions. Previously enlarged organs must have regressed and not be palpable. Bone marrow (BM) must be negative if positive at baseline. Normalization of markers. Partial Response (PR) is a 50% decrease in the sum of products of greatest diameters (SPD) for up to 6 identified dominant lesions, including spleenic and hepatic nodules from baseline. No new lesions and no increase in the size of liver, spleen or other nodes. If PET scan or when the PET scan was positive before therapy, PET should be positive in at least one previously involved site.

Only eligible and evaluable HIV-negative patients who treated with response-adapted therapy based on FDG-PET imaging after 2 cycles of ABVD were included in the analysis

Adverse Events (AEs) are reported by the NCI Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. For each patient, worst grade of each event type is reported. Grade 3 = Severe, Grade 4 = Life-threatening, Grade 5 = Fatal.

Eligible HIV-negative patients who had received any treatment were included in the adverse event summaries. Six interim PET-positive patients who did not receive BEACOPP were excluded. patients Any CTCAE 4.0 event of Grade 3 (severe), Grade 4 (life threatening), or Grade 5 (fatal) which deemed to be related to protocol treatment are included.

Disease progression is defined using the 2007 revised Cheson et al. criteria that is at least 50% increase in sum of the product of the diameters (SPD) of target measurable nodal lesions over the smallest sum observed, or >= 50% increase in greatest transverse diameter (GTD) of any nodal > 1 cm in shortest axis, or >= 50% increase in the SPD of other target measurable lesions over the smallest sum observed, any new bone marrow involvement, any new lesion, lymph node with long axis is >1.5 cm or if both long and short axes are > 1 cm, PET positive if patients with no pretreatment PET scan or when PET scan was positive before therapy. progression-free survival is measured from date of registration to date of first observation of progressive disease, or death due to any cause. Patients last known to be alive and progression-free are censored at date of last contact.

Eligible and evaluable HIV-positive patients who started the initial ABVD were included in the analysis regardless the response-adapted therapy after 2 initial cycles of ABVD was administered.

Measured from date of registration to date of death due to any cause. Patients last known to be alive and are censored at date of last contact.

Eligible and evaluable HIV-positive patients who started initial ABVD were included in the analysis regardless the response-adapted therapy after 2 initial cycles of ABVD was administered.

Complete Response (CR) is a complete disappearance of all disease with the exception of the following. If no PET scan or when the PET scan was positive before therapy, a post-treatment residual mass of any size is permitted if it is PET negative. If the PET scan was negative before therapy, all nodal masses at baseline must have regressed. No new lesions. Previously enlarged organs must have regressed and not be palpable. Bone marrow (BM) must be negative if positive at baseline. Normalization of markers. Partial Response (PR) is a 50% decrease in the sum of products of greatest diameters (SPD) for up to 6 identified dominant lesions, including spleenic and hepatic nodules from baseline. No new lesions and no increase in the size of liver, spleen or other nodes. If PET scan or when the PET scan was positive before therapy, PET should be positive in at least one previously involved site.

Eligible and evaluable HIV-positive patients who treated with 2 initial cycles of ABVD followed by response-adapted therapy based on interim FDG-PET imaging were included he analysis.

Adverse Events (AEs) are reported by the NCI Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. For each patient, worst grade of each event type is reported. Grade 3 = Severe, Grade 4 = Life-threatening, Grade 5 = Fatal.

Eligible HIV-positive patients who had received any treatment were included in the adverse event summaries. Any CTCAE 4.0 event of Grade 3 (severe), Grade 4 (life threatening), or Grade 5 (fatal) which deemed to be related to protocol treatment are included.