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mHNSCC - L1 - all population, anti-PD-(L)1 , meta-analysis of study results

Outcome Relative effect 95%CI LoD Trt. better when I2 k (RCT/OBS) Bayesian probability Overall ROB Publication bias Degree of certainty Endpoint importance Published MA

efficacy endpoints 00

deaths (OS) 0.80 [0.71, 0.91]< 10%2 studies (2/-)100.0 %some concernnot evaluable moderatecrucial-
deaths (OS) (extension) 0.72 [0.60, 0.87]< 10%1 study (1/-)100.0 %NAnot evaluable important-
progression or deaths (PFS) 1.11 [0.77, 1.61]< 189%2 studies (2/-)28.7 %some concernnot evaluable moderateimportant-
objective responses (ORR) 0.59 [0.23, 1.56]> 193%2 studies (2/-)14.5 %some concernnot evaluable moderatenon important-

safety endpoints 00

AE (any grade) 0.31 [0.22, 0.44]< 10%1 study (1/-)100.0 %NAnot evaluable non important-
AE (grade 3-4) 1.00 [0.69, 1.46]< 10%1 study (1/-)49.7 %NAnot evaluable non important-
AE leading to death (grade 5) 1.02 [0.69, 1.50]< 10%2 studies (2/-)46.1 %some concernnot evaluable moderatenon important-
AE leading to treatment discontinuation (any grade) 0.68 [0.20, 2.35]< 195%2 studies (2/-)72.8 %some concernnot evaluable moderatenon important-
TRAE (any grade) 0.18 [0.01, 2.64]< 196%2 studies (2/-)89.3 %some concernnot evaluable moderatenon important-
TRAE (grade 3-4) 0.32 [0.03, 3.76]< 199%2 studies (2/-)81.6 %some concernnot evaluable moderatenon important-
TRAE leading to death (grade 5) 0.78 [0.20, 3.08]< 166%2 studies (2/-)63.9 %some concernnot evaluable moderatenon important-

TRAE (grade 3-4) endpoints 00

Adrenal insufficiency TRAE (grade 3-4) 1.47 [0.11, 19.25]< 10%2 studies (2/-)38.4 %some concernnot evaluable moderatenon important-
Anaemia TRAE (grade 3-4) 0.25 [0.01, 8.25]< 195%2 studies (2/-)78.0 %some concernnot evaluable moderatenon important-
Asthenia TRAE (grade 3-4) 0.54 [0.08, 3.85]< 165%2 studies (2/-)73.0 %some concernnot evaluable moderatenon important-
Blood and lymphatic system disorders TRAE (grade 3-4) 0.18 [0.00, 9.02]< 198%2 studies (2/-)79.9 %some concernnot evaluable moderatenon important-
Blood creatinine increased TRAE (grade 3-4) 1.49 [0.11, 19.48]< 10%2 studies (2/-)38.1 %some concernnot evaluable moderatenon important-
Colitis TRAE (grade 3-4) 1.00 [0.25, 4.01]< 10%2 studies (2/-)50.1 %some concernnot evaluable moderatenon important-
Constipation TRAE (grade 3-4) 1.00 [0.06, 15.99]< 10%2 studies (2/-)50.1 %some concernnot evaluable moderatenon important-
Decreased appetite TRAE (grade 3-4) 0.51 [0.04, 6.46]< 180%2 studies (2/-)69.6 %some concernnot evaluable moderatenon important-
Diarrhoea TRAE (grade 3-4) 0.43 [0.13, 1.42]< 10%2 studies (2/-)91.7 %some concernnot evaluable moderatenon important-
Endocrine disorders TRAE (grade 3-4) 3.70 [0.39, 35.06]< 10%2 studies (2/-)12.9 %some concernnot evaluable moderatenon important-
Fatigue TRAE (grade 3-4) 0.74 [0.11, 5.15]< 185%2 studies (2/-)62.1 %some concernnot evaluable moderatenon important-
Gastrointestinal disorders TRAE (grade 3-4) 0.07 [0.02, 0.23]< 10%1 study (1/-)100.0 %NAnot evaluable non important-
General disorders and administration site conditions TRAE (grade 3-4) 0.62 [0.06, 5.93]< 195%2 studies (2/-)66.1 %some concernnot evaluable moderatenon important-
Hepatitis TRAE (grade 3-4) 2.91 [0.29, 28.79]< 10%2 studies (2/-)18.2 %some concernnot evaluable moderatenon important-
Hyperthyroidism TRAE (grade 3-4) 1.47 [0.11, 19.25]< 10%2 studies (2/-)38.4 %some concernnot evaluable moderatenon important-
Hypophysitis TRAE (grade 3-4) 2.00 [0.18, 22.10]< 10%2 studies (2/-)28.8 %some concernnot evaluable moderatenon important-
Hypothyroidism TRAE (grade 3-4) 1.04 [0.02, 52.60]< 10%1 study (1/-)49.2 %NAnot evaluable non important-
Infusion-related reactions TRAE (grade 3-4) 0.33 [0.11, 1.02]< 10%2 studies (2/-)97.2 %some concernnot evaluable moderatenon important-
Leucopenia TRAE (grade 3-4) 0.17 [0.01, 2.60]< 173%2 studies (2/-)89.8 %some concernnot evaluable moderatenon important-
Metabolism and nutrition disorders TRAE (grade 3-4) 0.48 [0.15, 1.62]< 189%2 studies (2/-)88.0 %some concernnot evaluable moderatenon important-
Mucosal inflammation TRAE (grade 3-4) 0.56 [0.04, 8.18]< 191%2 studies (2/-)66.3 %some concernnot evaluable moderatenon important-
Myocarditis TRAE (grade 3-4) 1.49 [0.11, 19.48]< 10%2 studies (2/-)38.1 %some concernnot evaluable moderatenon important-
Myositis TRAE (grade 3-4) 0.50 [0.05, 5.51]< 10%2 studies (2/-)71.4 %some concernnot evaluable moderatenon important-
Nausea TRAE (grade 3-4) 0.22 [0.01, 6.71]< 182%2 studies (2/-)80.5 %some concernnot evaluable moderatenon important-
Nephritis TRAE (grade 3-4) 2.32 [0.20, 26.51]< 10%2 studies (2/-)25.0 %some concernnot evaluable moderatenon important-
Neutropenia TRAE (grade 3-4) 0.09 [0.00, 10.60]< 191%2 studies (2/-)83.1 %some concernnot evaluable moderatenon important-
Pancreatitis TRAE (grade 3-4) 1.49 [0.11, 19.48]< 10%2 studies (2/-)38.1 %some concernnot evaluable moderatenon important-
Pneumonitis TRAE (grade 3-4) 2.52 [0.79, 8.08]< 10%2 studies (2/-)6.0 %some concernnot evaluable moderatenon important-
Rash TRAE (grade 3-4) 0.09 [0.03, 0.28]< 10%2 studies (2/-)100.0 %some concernnot evaluable moderatenon important-
Severe skin reaction TRAE (grade 3-4) 0.20 [0.08, 0.53]< 126%2 studies (2/-)99.9 %some concernnot evaluable moderatenon important-
Skin and subcutaneous tissue disorders TRAE (grade 3-4) 0.11 [0.03, 0.35]< 10%1 study (1/-)100.0 %NAnot evaluable non important-
Stomatitis TRAE (grade 3-4) 0.43 [0.01, 19.84]< 186%2 studies (2/-)66.5 %some concernnot evaluable moderatenon important-
Thrombocytopenia TRAE (grade 3-4) 0.23 [0.01, 5.94]< 190%2 studies (2/-)81.1 %some concernnot evaluable moderatenon important-
Thyroiditis TRAE (grade 3-4) 1.00 [0.06, 15.99]< 10%2 studies (2/-)50.1 %some concernnot evaluable moderatenon important-
Uveitis TRAE (grade 3-4) 1.00 [0.06, 15.99]< 10%2 studies (2/-)50.1 %some concernnot evaluable moderatenon important-
Vomiting TRAE (grade 3-4) 0.52 [0.04, 7.08]< 166%2 studies (2/-)68.6 %some concernnot evaluable moderatenon important-
Weight decreased TRAE (grade 3-4) 1.49 [0.24, 9.20]< 10%2 studies (2/-)33.3 %some concernnot evaluable moderatenon important-

AE (grade 3-4) endpoints 00

Abdominal pain AE (grade 3-4) 0.31 [0.08, 1.14]< 10%2 studies (2/-)96.1 %some concernnot evaluable moderatenon important-
Acute kidney injury AE (grade 3-4) 2.26 [0.69, 7.40]< 10%2 studies (2/-)8.9 %some concernnot evaluable moderatenon important-
Anaemia AE (grade 3-4) 0.64 [0.10, 4.24]< 196%2 studies (2/-)67.9 %some concernnot evaluable moderatenon important-
Asthenia AE (grade 3-4) 0.62 [0.19, 2.01]< 153%2 studies (2/-)78.5 %some concernnot evaluable moderatenon important-
Blood and lymphatic system disorders AE (grade 3-4) 0.38 [0.03, 4.87]< 199%2 studies (2/-)76.8 %some concernnot evaluable moderatenon important-
Decreased appetite AE (grade 3-4) 0.67 [0.14, 3.15]< 175%2 studies (2/-)69.3 %some concernnot evaluable moderatenon important-
Diarrhoea AE (grade 3-4) 0.56 [0.13, 2.37]< 160%2 studies (2/-)78.4 %some concernnot evaluable moderatenon important-
Dyspnoea AE (grade 3-4) 1.82 [0.66, 4.99]< 10%2 studies (2/-)12.3 %some concernnot evaluable moderatenon important-
Fatigue AE (grade 3-4) 0.99 [0.40, 2.45]< 163%2 studies (2/-)50.8 %some concernnot evaluable moderatenon important-
Febrile neutropenia AE (grade 3-4) 0.27 [0.01, 13.91]< 187%2 studies (2/-)73.8 %some concernnot evaluable moderatenon important-
Gastrointestinal disorders AE (grade 3-4) 0.69 [0.17, 2.75]< 194%2 studies (2/-)70.2 %some concernnot evaluable moderatenon important-
General disorders and administration site conditions AE (grade 3-4) 0.86 [0.22, 3.39]< 193%2 studies (2/-)58.8 %some concernnot evaluable moderatenon important-
Hypertension AE (grade 3-4) 11.64 [1.49, 90.62]< 10%2 studies (2/-)1.0 %some concernnot evaluable moderatenon important-
Hypothyroidism AE (grade 3-4) 0.96 [0.02, 48.37]< 10%1 study (1/-)50.9 %NAnot evaluable non important-
Increase AST AE (grade 3-4) 0.39 [0.12, 1.27]< 10%2 studies (2/-)94.1 %some concernnot evaluable moderatenon important-
Leucopenia AE (grade 3-4) 0.17 [0.01, 3.10]< 175%2 studies (2/-)88.1 %some concernnot evaluable moderatenon important-
Metabolism and nutrition disorders AE (grade 3-4) 0.76 [0.35, 1.63]< 186%2 studies (2/-)76.1 %some concernnot evaluable moderatenon important-
Mucosal inflammation AE (grade 3-4) 0.73 [0.10, 5.61]< 190%2 studies (2/-)61.8 %some concernnot evaluable moderatenon important-
Nausea AE (grade 3-4) 0.21 [0.01, 6.94]< 183%2 studies (2/-)80.5 %some concernnot evaluable moderatenon important-
Nervous system disorders AE (grade 3-4) 0.61 [0.28, 1.37]< 162%2 studies (2/-)88.4 %some concernnot evaluable moderatenon important-
Neutropenia AE (grade 3-4) 0.11 [0.00, 6.60]< 194%2 studies (2/-)84.9 %some concernnot evaluable moderatenon important-
Pneumonitis AE (grade 3-4) 0.78 [0.49, 1.27]< 10%2 studies (2/-)83.8 %some concernnot evaluable moderatenon important-
Rash AE (grade 3-4) 0.09 [0.03, 0.28]< 10%2 studies (2/-)100.0 %some concernnot evaluable moderatenon important-
Renal and urinary disorders AE (grade 3-4) 1.51 [0.67, 3.40]< 10%2 studies (2/-)16.1 %some concernnot evaluable moderatenon important-
Respiratory, thoracic and mediastinal disorders AE (grade 3-4) 2.36 [1.48, 3.74]< 10%2 studies (2/-)0.0 %some concernnot evaluable moderatenon important-
Sepsis AE (grade 3-4) 2.49 [0.77, 8.03]< 10%2 studies (2/-)6.3 %some concernnot evaluable moderatenon important-
Skin and subcutaneous tissue disorders AE (grade 3-4) 1.42 [0.67, 3.00]< 10%2 studies (2/-)18.1 %some concernnot evaluable moderatenon important-
Stomatitis AE (grade 3-4) 0.44 [0.01, 21.27]< 186%2 studies (2/-)65.9 %some concernnot evaluable moderatenon important-
Thrombocytopenia AE (grade 3-4) 0.21 [0.01, 5.80]< 190%2 studies (2/-)81.8 %some concernnot evaluable moderatenon important-
Vascular disorders AE (grade 3-4) 1.12 [0.55, 2.29]< 148%2 studies (2/-)38.0 %some concernnot evaluable moderatenon important-
Vomiting AE (grade 3-4) 0.47 [0.05, 4.90]< 177%2 studies (2/-)73.4 %some concernnot evaluable moderatenon important-
Weight decreased AE (grade 3-4) 2.53 [0.98, 6.58]< 10%2 studies (2/-)2.8 %some concernnot evaluable moderatenon important-

LoD: level of statistical demonstration: Statistically conclusive: statistically significant with a strict control of overall risk of type 1 error (statistically demonstrated), does not take into account the risk of bias; suggested: nominally statistically significant but without a strict control of overall risk of type 1 error; inconclusive: not nominally statistically significant; safety concerns;
Bayesian probability: Bayesian posterior probability of treatment effect (computed with a noninformative prior); ROB: risk of bias; k: number of studies; published MA: number of published meta-analysis on the same topic; degree of certainty adapted from GRADE. Trt. better when: indicates when the relative treatment effect shows that the studied treatment is better than control.