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The discovery of AZD4547: 
An orally bioavailable, potent and 
selective N-(5-Pyrazolyl) 
benzamide FGFR1-3 inhibitor 
David Andrews 
AstraZeneca 
27th June 2014 
AnorcQ Industrial Summer School
2 
FGF / FGFR signaling 
FGFR2 FGFR3 
FGFR1 
P P 
P P 
P P 
P P 
FGFR4 
18 secreted ligands 
4 non-secreted ligands 
Proliferation / migration / 
anti-apoptosis / angiogenesis 
Four FGF receptors, 
FGFR1-4, but multiple splice 
variants in extracellular 
ligand binding domain create 
many more receptor 
isoforms with different ligand 
binding specificities 
Targeting FGFR kinase inhibition the four receptors have different, 
but highly homogous, kinase domains
3 
FGF / FGFR signaling 
FGFR2 FGFR3 
FGFR1 
18 secreted ligands 
4 non-secreted ligands 
P PP P 
P PP P 
FGFR4 
whole kinase domain sequence homology (276-277 
residues) 
FGFR1 FGFR2 FGFR3 FGFR4 
FGFR1 100% 
FGFR2 88% 100% 
FGFR3 86% 89% 100% 
FGFR4 77% 78% 81% 100% 
"key" ATP site homology (81 residues) 
FGFR1 FGFR2 FGFR3 FGFR4 
FGFR1 100% 
FGFR2 94% 100% 
FGFR3 91% 90% 100% 
FGFR4 89% 89% 93% 100%
Early pharmacological tools – 
Parke Davis FGFR inhibitors 
4 
N 
N N 
O 
O 
NH 
HN O 
HN 
N 
N 
N N 
O 
O 
NH 
HN O 
H2N 
PD166866 PD173074 
J. Pharmacol. Exp. Ther. 1998, 286(1), 569 
J. Med. Chem. 1998, 41(11), 1752 
J. Med. Chem. 1997, 40(15), 2296 
Bioorg. Med. Chem. Lett. 1997, 7(18), 2415
Binding mode of PD173074 
5 
N 
N N 
O 
O 
NH 
HN O 
HN 
N 
PD173074 
Crystal structure of an angiogenesis inhibitor bound to the FGF 
receptor tyrosine kinase domain 
EMBO J 1998, 17(20): 5896
VEGFR & FGFR kinase inhibitor drugs in clinical 
development 
6 
F NH2 N N N 
NH 
NH 
O TKI258 
Dovitinib 
O 
N 
N 
N H 
F 
N 
O 
TKI258 / Docitinib: Blood 2005, 105, 2941 
BIBF 1120 / Intedanib: Cancer Res. 2008, 68, 4774 
BMS-582664: Brivanib alaninate: Clin. Cancer Res. 2008, 14, 6146 
O 
O 
O 
H2N 
BMS-582664 
Brivanib alaninate 
NH 
NH 
N N 
N 
O 
O 
O 
BIBF-1120 
Intedanib 
Phase III 
Renal cell cancer Phase III 
Non-small cell lung cancer 
Ovarian cancer. 
Phase III 
Hepatocellular cancer. 
Colorectal cancer
7 
Aberrant regulation of FGF/FGFR signaling 
occurs in many human tumors 
FGFR2 FGFR3 
FGFR1 
P P 
P P 
P P 
P P 
Non-invasive bladder cancer 
Mutations ~70% tumors 
Multiple myeloma 
Translocation ~20% tumors 
FGFR4 
18 ligands 
Proliferation / migration / 
anti-apoptosis / angiogenesis 
Colorectal and 
Hepatocellular cancer 
Up-regulated FGF19 
Gastric cancer 
Amplification ~5% tumors 
Endometrial cancer 
Mutations ~15% 
Breast cancer 
Amplification ~10% ER +ve 
Squamous NSCLC 
Amplification ~15% 
Prostate (FGFR1 and 4) 
Up-regulated FGFR4 and 
FGF ligands
Recently reported FGFR inhibitors 
8 
N 
N 
N 
O 
N 
H 
Cl 
Cl 
O 
O 
NH 
N 
N 
NVP-BGJ398 
IC50 nM 
FGFR1 0.9 
FGFR2 1.4 
FGFR3 1.0 
FGFR4 60 
KDR 180 
BGJ398 J. Med. Chem. 2011, 54, 7066 LY2874455 Mol Cancer Ther 2011, 10(11): 
2200 
N 
Cl 
Cl 
O 
NH 
N 
N 
N 
HO 
LY2874455 
IC50 nM 
FGFR1 2.8 
FGFR2 2.6 
FGFR3 3.4 
FGFR4 6 
KDR 7
Identification of AZ FGFR hit compounds 
9 
Screening of compounds prepared in an IGF1R TKI project in a kinase panel 
highlighted some pyrazolylaminopyrimidines that were more potent against 
FGFR than other kinases in the panel. 
A key project aim was to identify compounds that are selective inhibitors of 
FGFR suitable for in vivo testing in order to identify FGFR driven effects. In 
particular this meant selectivity with respect to VEGFR. 
Crystal structure and SAR analysis was used to guide chemistry to achieve 
desired selectivity goal. 
N 
N 
N 
NH 
N 
N H 
Br 
H 
O N 
RA Norman, A-K Schott, DM Andrews, J Breed, KM Foote, AP 
Garner, et al Protein-ligand crystal structures can guide the 
design of selective inhibitors of the FGFR Tyrosine Kinase. 
2012. J. Med. Chem. 55 (11), pp 5003–5012
Pyrazolylaminopyrimidines SAR (1) 
10 
N 
N 
N 
N H 
N 
NH 
R1 
Br 
H 
Cpd R1 FGFR1 
enzyme 
KDR 
enzyme 
IGF1R 
enzyme 
1 540 590 6000 
2 670 920 4200 
3 69 680 7800 
O N 
4 32 3600 9100 
O N 
N 
IC50 (nM)
Pyrazolylaminopyrimidines SAR (2) 
11 
N 
N 
HN 
N H 
N 
R2 
NH 
Br 
N 
O 
Cpd R2 FGFR1 
enzyme 
IC50 (nM) 
KDR 
enzyme 
IGF1R 
enzyme 
3 Me 69 680 7800 
5 57 1100 18000 
O 
6 9.8 150 370 
7 2.4 23 6800
Early hit SAR: Compound 7 
12 
N 
N 
HN 
N H 
N 
NH 
Br 
N 
O 
ClogP 4.3 
Aqueous Solubility pH7.4 (mM) 1.8 
PPB (% Free) rat / man 0.6 / 0.1 
Hep Metabol Clint (μl/min/1E6) rat / man 118 / 259 
CYP IC50 1A2 / 3A4 / 2C9 / 2C19 / 2D6 (mM) <0.1 / 0.23 / 0.75 / 0.99 / >10
Pyrazolylaminopyrimidines SAR (3) 
13 
Cpd X R2 
FGFR1 
enzyme 
IC50 (nM) 
pFGFR1 cell 
assay IC50 
(nM) 
LogD 
8 Br cPr 50 - 3.4 
9 Cl cPr 40 - 3.3 
10 H cPr 40 - 2.5 * 
11 H 1.8 60 3.1 
R2 
N 
HN 
N H 
N N 
HN 
O 
N 
X 
MeO 
OMe 
* estimated 
Compound 11 properties 
hERG IC50 (mM) 8.4 
Aqueous Solubility pH7.4 (mM) 0.58 
Hep Metabol Clint (μl/min/1E6) rat 44 
CYP IC50 1A2 / 3A4 / 2C9 / 2C19 / 2D6 (mM) >10 / <0.1 / 2.6 / >10 / >10
Pyrazolylaminopyrimidines summary 
and next steps….. 
14 
• Pyrazolylaminopyrimidines inhibitors provided potent and selective 
FGFR inhibitors and understanding of SAR. 
• However the physical and ADME properties of the more potent 
pyrazolylaminopyrimidines were far from acceptable. 
• To improve on these aminopyrazole based inhibitors of FGFR1, we 
sought to identify alternative compounds, containing this key hinge 
binding motif, that could provide a less intrinsically lipophilic start point 
for developing FGFR inhibitors. 
• As part of this effort, compound 12 was synthesized and found to be 
a sub-micromolar inhibitor of FGFR1 
HN N 
N H 
Compound 12 N N 
O
N-(5-Pyrazolyl)benzamide SAR 
15 
Cpd R1 
FGFR1 
enzyme IC50 
(nM) 
pFGFR1 cell 
assay IC50 
(nM) 
LogD Aq. Sol. 
(mM) 
12 cPr 66 610 2.4 * - 
13 MeO 
0.7 19 3.1 27 
OMe 
O 
14 0.9 6.0 3.2 1.4 
MeO 
OMe 
* estimated 
R1 
N 
HN 
N H 
O 
N 
N
Characterization of lead pyrazolylbenzamide 
Compound 13 
17 
N 
HN 
N H 
MeO OMe 
N 
O 
N 
FGFR1 
enzyme 
IC50 (nM) 
KDR enzyme 
IC50 (nM) 
pFGFR1 cell 
assay IC50 
(mM) 
pKDR cell 
assay IC50 
(mM) 
0.7 210 0.019 0.24 
LogD 
pH7.4 
Aq. Sol. 
pH7.4 (mM) 
PPB rat /hu 
(%free) pKa hERG IC50 
(mM) 
3.1 27 3.4 / 5.7 7.6 >30 
CYP inhibition IC50 (mM) 
1A2 3A4 2C9 2C19 2D6 
>10 7.5 >10 >10 >10 
Hydrolytic stability T1/2 (days) 
pH 1 pH 4 pH 6 pH 8 pH 10 
43 >1000 >1000 375 223
Characterization of lead pyrazolylbenzamide 
Compound 13 
18 
MeO 
OMe 
N 
N H 
HN 
O 
N 
N
Characterization of lead pyrazolylbenzamide 
Compound 13 
19 
30 
25 
20 
15 
10 
5 
0 
Kinase selectivity screening 
(Dundee consortiumpanel) 
compd 6: 1μM, ATP: Km 
<10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 >90 
Count of kinases in inhibition band 
% inhibition 
FGFR1 
MeO 
OMe 
N 
N H 
HN 
O 
N 
N
Characterization of lead pyrazolylbenzamide 
Compound 13 
20 
N 
HN 
N H 
MeO OMe 
N 
O 
N 
Models of metabolism Models of absorption 
Rat heps 
Clint 
(ml/min/106) 
Human heps 
Clint 
(ml/min/106) 
MDCK AtoB 
pApp (cm/s) MDCK BtoA 
pApp (cm/s) 
60 8.1 10.5 x10-6 12.2 x10-6 
In vivo PK 
Species 
(media) 
Cl 
(ml/min/kg) Vss (l/kg) 
Oral 
bioavailability 
(%) 
Rat (plasma) 46 3.9 50 
Dog (blood) 12 1.3 30 
Main site of metabolism identified as terminal NMe of piperidine: 
Oxidative demethylation and N-oxidation
Pyrazolylbenzamide SAR: piperazine variation 
21 
X 
MeO 
OMe 
HN N 
N H 
O 
Het 
Cpd X Het 
FGFR1 
enzyme IC50 
(nM) 
pFGFR1 cell 
assay IC50 (nM) 
Solvent 
LogD 
pH7.4 
Aq. Sol. 
pH7.4 
(mM) 
N 
13 CH2 N 
0.7 19 3.1 27 
N 
14 O N 
0.9 6 3.2 1.4 
N 
NH 
16 CH2 0.9 17 1.8 37 
N H 
17 O N 
1.7 17 1.9 56 
N 
18 CH2 1.6 11 2.3 372
Characterization of lead pyrazolylbenzamide 
Compound 13 
22 
MeO 
OMe 
N 
N H 
HN 
O 
N 
N
23 
Pyrazolylbenzamide SAR: piperazine variation 
Cpd pKa 
MeO 
OMe 
MDCK 
AtoB pApp 
(cm/s) 
X 
HN N 
Rat heps 
Clint 
(ml/min/106) 
Het 
Rat Cl 
(ml/min/kg) # 
Rat Vss 
(l/kg) # 
Rat oral 
bioavail 
. (%) # 
N H 
O 
13 7.6 10.5 x10-6 60 46 3.9 50 
14 7.6 * 7.3 x10-6 75 - - - 
16 8.6 4.1 x10-6 12 23 5.6 3 
17 9.1 4.2 x10-6 7.2 7.8 1.8 4 
18 9.2 5.2 x10-6 <3.9 59 11.7 16 
Het groups 13 & 14 N N 
16 N 
NH 17 
N H 
N 18 
N
Pyrazolylbenzamide summary 
and next steps….. 
24 
Representative compounds in the pyrazolylbenzamide series fall 
into two groups:- 
•Those with moderate/high clearance and reasonable 
bioavailability, 
• associated with lower pKa, higher LogD and higher 
permeability 
and 
•Those with low clearance but with low oral bioavailability, 
• associated with higher pKa, lower LogD and lower 
permeability.
Pyrazolylbenzamide summary 
and next steps….. 
25 
Hypothesis 
• Metabolism appears to be blocked by protonation of the terminal 
nitrogen. Higher pKa compounds show lower intrinsic clearance. 
• However compounds with higher pKa, lower LogD, and/or higher 
NH donor count appear to show poor absorption. 
Proposal 
• Explore N-alkyl heterocycle with moderated pKa and LogD. 
(increased pKa and lower LogD). 
• Explore NH heterocycles with increased lipophilicity and potential 
to sterically “mask” the polar NH group.
Optimal pyrazolylbenzamides 
26 
Cpd FGFR1 enzyme 
IC50 (nM) 
pFGFR1 cell 
assay IC50 (nM) 
Cpd 19 Cpd 20 
LogD 
pH7.4 
Aq. Sol. 
pH7.4 (mM) pKa 
19 0.2 12 2.4 157 8.5 
20 0.5 12 3.0 * 148 8.7 
Cpd Rat heps 
Clint (ml/min/106) 
Human heps 
Clint 
(ml/min/106) 
Rat PK 
medium 
Rat Cl 
(ml/min/kg) 
Rat Vss 
(l/kg) 
Rat oral 
bioavail. (%) 
19 11 <6.1 plasma 16 3.4 54 
20 9.7 <4.1 blood 13 1.7 46 
* Estimated 
MeO 
OMe 
N 
N H N H 
O 
Het 
N 
NH N O 
Het =
Optimal pyrazolylbenzamides 
27 
MeO 
OMe 
N 
N H N H 
O 
N 
NH 
Compound 19 was selected for progression to 
clinical development and given the development 
code AZD4547
AZD4547 Discovery Synthetic Route 
28 
O 
O 
N H 
N 
O NH 
N 
NH 
O 
O 
N 
N 
NH2 
O 
O 
O 
N 
NH 
O 
N 
O 
O 
O 
O 
O 
O 
O 
N 
O 
O 
N 
NH 
NH2 
O O 
F 
N H 
NH 
NaHMDS 
THF 
+ 
NaH 
Toluene 
NH2NH2 
EtOH 
(BOC)2O 
CH2Cl2 
heat, 
DMSO 
+
AZD4547 Discovery Synthetic Route 
29 
O 
O 
N H 
N 
O NH 
N 
NH 
O 
O 
N 
N 
NH2 
O 
O 
O 
N 
NH 
O 
N 
O 
O 
O 
O 
O 
O 
O 
N 
O 
O 
N 
NH 
NH2 
O O 
F 
N H 
NH 
NaHMDS 
THF 
+ 
NaH 
Toluene 
NH2NH2 
EtOH 
(BOC)2O 
CH2Cl2 
heat, 
DMSO 
+
AZD4547 Discovery Synthetic Route 
30 
O 
O 
N H 
N 
O NH 
N 
NH 
O 
O 
N 
N 
NH2 
O 
O 
O 
N 
NH 
O 
N 
O 
O 
O 
O 
O 
O 
O 
N 
O 
O 
N 
NH 
NH2 
O O 
F 
N H 
NH 
NaHMDS 
THF 
+ 
NaH 
Toluene 
NH2NH2 
EtOH 
(BOC)2O 
CH2Cl2 
heat, 
DMSO 
+
31 
AZD4547 Characterization 
• AZD4547 is a potent and selective inhibitor of 
FGFR 1, 2 and 3 receptor tyrosine kinases 
FGFR1 FGFR2 FGFR3 FGFR4 KDR IGFR 
Enzyme 
IC50 (nM) 0.2 2.5 1.8 165 24 581 
Cell IC50 (nM) 13 2 40 142 258 829
32 
Drug properties 
Parameter AZD4547 
Mol. Weight 463.6 
Aq solubility (μM) 157 
LogD 2.4 
Form Crystalline, stable 
Protein binding (% free; mouse, rat, rabbit, dog, human) 0.7,1.8, 0.3, 2.9, 2.1 
Blood clearance (ml/min/kg; rat, dog) 39, 13 
Blood Vdss (l/kg; rat, dog) 6, 5 
Bioavailability (%; rat, dog) 42–100 
In vitro hepatocyte clearance (ml/min/106 cells; rat, dog, human) 12, <4.4, ≤8.6 
CYP inhibition IC50 (μM at 1A2, 2A6, 2E1, 2B6, 2C8, 2C9, 2C19, 
All >10 
2D6, 3A4) 
Ames Negative 
Mouse lymphoma Negative 
hERG (mM) >33
33 
Genetic dysregulation of FGFR confers 
sensitivity to AZD4547 in tumor cell lines 
KG1a 
Sum52-PE 
KMS11 
kDa 
76- 
52- 
225- 
150- 
102- 
225- 
150- 
102- 
52- 
38- 
31- 
MCF7 
FGFR1 
FGFR2 
FGFR3 
GAPDH 
Tumor 
cell line 
Deregulated FGFR 
member/mechanism 
Proliferation 
IC50 (μM) SEM 
KG1a FGFR1 – Gene fusion 0.018 (n=3) 0.0017 
SUM52- 
FGFR2 – Gene 
PE 
amplification 0.041 (n=4) 0.0185 
KMS11 
FGFR3 – Translocation 
(t4;14) and mutation 
(Y373C) 
0.281 (n=5) 0.0294 
MCF7 None >30 (n=6) NA
34 
AZD4547 induces dose-dependent efficacy in 
the KMS-II multiple myeloma xenograft model 
Control 
3 mg/kg qd 
3 mg/kg bid 
6.25 mg/kg qd 
6.25 mg/kg bid 
12.5 mg/kg qd 
2.4 
2.2 
2.0 
1.8 
1.6 
1.4 
1.2 
1.0 
0.8 
0.6 
0.4 
Control 
AZD4547 12.5mg/kg qd 
AZD4547 6.25mg/kg qd 
AZD4547 6.25mg/kg bid 
AZD4547 3mg/kg qd 
AZD4547 3mg/kg bid 
• Dose-dependent antitumor activity at well tolerated doses 
• Maximum efficacious doses – 12.5 mg/kg qd/6.25 mg/kg 
bid 
• Efficacy is linked to to AUC rather than CMAX 
NS 
–53%*** 
–70%*** 
–98%*** 
–100%*** 
0 5 10 15 20 25 
0.2 
Mean Tumour volume (cm3) +/- SEM 
Days of Treatment 
Mean tumor volume (cm3) ± SEM
35 
AZD4547 reverses a bFGF driven angiogenic 
phenotype 
Vessel formation in vitro 
Control media bFGF (5 ng/ml) 
bFGF (5 ng/ml) + 
AZD4547 (100 nM) 
Vessel formation in vivo 
Matrigel plug assay – mean vessel density 
0.6 
0.5 
0.4 
0.3 
0.2 
0.1 
0 
Control bFGF 
(1 μg/ml) 
bFGF + 
AZD4547 
(6.25 mg/kg bid) 
MVD per 5000 μm2
36 
AZD4547 in vivo tumor efficacy is not 
attributable to inhibition of KDR 
AZD4547 is inactive in KDR-sensitive 
xenograft models 
Tumor 
model 
Dose 
(mg/kg) 
Frequency of 
dosing 
Inhibition 
of tumor growth 
(%) 
Calu-6 6.25 bid 0 
LoVo 6.25 bid 0 
HCT-15 6.25 bid 4.7 
AZD4547 has no effect on vessel 
growth in KMS11 tumors 
Control AZD4547 
(7 days at 6.25 mg/kg bid) 
CD31 Staining 
Calu-6 
Control 
Cediranib 3 mg/kg qd 
AZD4547 6.25 mg/kg bid 
–2 0 2 4 6 8 10 12 14 16 18 
1.6 
1.4 
1.2 
1.0 
0.8 
0.6 
0.4 
0.2 
Mean tumor volume (cm3) ± SEM 
Days of treatment
37 
FGFR2 gene amplified gastric cancer cells are 
very sensitive to AZD4547 
Sensitivity of gastric cancer cells to AZD4547 
in MTS assay 
100 
10 
1 
0.1 
0.01 
0.001 
GI50 (μM) 
GC lines
38 
AZD4547 causes dose-dependent tumor growth 
inhibition in Snu-16 gastric xenograft model 
Model 
FGFR2 expression % TGI by AZD4547 
FISH Affy 12.5 
mg/kg qd 
AZD4547 1.56 mg/kg qd po 
AZD4547 3.125 mg/kg qd po 
• Dose-dependent antitumor efficacy of AZD4547 at well tolerated doses 
• Evidence of tumor regression at 12.5 mg/kg qd 
• Efficacy of AZD4547 is greater in the Snu-16 model than in gastric cancer 
xenograft models with normal FGFR2 gene copy number (FISH = 1) 
25 
mg/kg qd 
Snu-16 6 +++ > 100 N/A 
AZ521 1 +++ 63 77 
MGC803 1 +++ 45 72 
1000 
0 
Treatment period (day) 
800 
3 
600 
400 
6 10 13 17 20 24 27 
Tumor volume (mm3) 
0 
AZD4547 6.25 mg/kg qd po 
AZD4547 12.5 mg/kg qd po 
200 
Vehicle control
AZD4547 is significantly more efficacious in 
gastric cancer primary models with FGFR2 gene 
amplification 
GC model ID SGC100 SGC031 G009 SGC001 G001 SGC020 SGC002 SGC110 SGC105 SGC083 
39 
FGFR2 FISH 
score 
1 
Disomy 
2 
Trisomy 
3 
Trisomy 
3 
Trisomy 
4 
Poly-somy 
5 
Poly-somy 
5 
Poly-somy 
5 
Poly-somy 
5 
Poly-somy 
6 
Gene 
Amplifi-cation 
FGFR2 FISH 
GCN 1.8 2.2 2.6 2.6 3.3 2.6 3.6 4 4.9 30 
Western Blot ++ + + +++ + + + ++ + ++++++ 
In vivo %TGI 
(25mg/kg/qd) 
26 
(P=0.030) 
7 
(P=0.419) 
44 
(P=0.004) 
98 
(P=<0.0001) 
76 
(P=<0.00 
01) 
25 
(P=0.143) 
26 
(P=0.053) 
14 
(P=0.120) 
10 
(P=0.288) 
162 
(P=<0.0001)
AZD4547 is efficacious against FGFR1-amplified 
squamous cell lung cancer primary models. 
900 
800 
700 
600 
500 
400 
300 
Tumor 200 
0 3 0 3 Tumor 40 
Model 
ID: 
FGFR1 IHC 
(IHC score 
embedded) 
L123 LC038 LC026 LC036 
++ 
+ 
Score 
6 
++ 
+ 
++ 
+ 
- 
ve 
Score 
6 
Score 
6 
Score 
1 
FGFR1 FISH 
(FISH score 
embedded) 
1,200 
Efficacy study of AZD4547 in L123 
1,200 
1,000 
1,000 
800 
800 
600 
600 
400 
400 
200 
200 
0 
Efficacy study of AZD4547 in L123 
G1: Vehicle control 
G2: AZD4547 25 mg/kg/qd 
G1: Vehicle control 
G2: AZD4547 25 mg/kg/qd 
0 2 4 6 8 10 12 14 
Tumor volume/m^3) 
Treatment period (days) 
0 
0 2 4 6 8 10 12 14 
Tumor volume/m^3) 
Treatment period (days) 
1,200 
1,200 
1,000 
1,000 
800 
800 
600 
600 
400 
400 
200 
200 
0 
Efficacy study of AZD4547 in LC038 
Efficacy study of AZD4547 in LC038 
Vehicle control 
AZD4547 25mg/kg/qd p.o 
Vehicle control 
AZD4547 25mg/kg/qd p.o 
0 7 14 21 28 
Tumor Volume (m3) 
Treatment period (Days) 
0 
0 7 14 21 28 
Tumor Volume (m3) 
Treatment period (Days) 
1,200 
1,200 
1,000 
1,000 
800 
800 
600 
600 
400 
400 
200 
200 
0 
Efficacy study of AZD4547 in LC026 
Efficacy study of AZD4547 in LC026 
G1: Vehicle control 
G2: AZD4547 25mg/kg/qd 
G1: Vehicle control 
G2: AZD4547 25mg/kg/qd 
0 2 4 6 8 10 12 14 16 18 20 22 
Treatment period (days) 
0 
0 2 4 6 8 10 12 14 16 18 20 22 
Tumor Volume (m3) 
Treatment period (days) 
800 
800 
700 
700 
600 
600 
500 
500 
400 
400 
300 
300 
200 
200 
100 
100 
0 
AZD4547 TGI in LC036F4 
AZD4547 TGI in LC036F4 
G1: vehicle control 
G2: AZD4547: 12.5mg/kg 
G3: AZD4547: 25mg/kg 
G1: vehicle control 
G2: AZD4547: 12.5mg/kg 
G3: AZD4547: 25mg/kg 
0 3 6 9 12 15 18 21 
Tumor Volume (m3) 
Treatment Period (days) 
900 
800 
700 
600 
500 
400 
300 
200 
100 
100 
0 
Volume (m3) 
AZD4547 G1: G2: G3: Treatment 0 
0 3 6 9 12 15 18 21 
Tumor Volume (m3) 
Treatment Period (days) 
0 
Volume (m3) 
AZD4547 G1: G2: G3: Treatment
41 
Summary 
• Pyrazolylaminopyrimidine hits provided key understanding of SAR and 
binding interactions leading to potent and selective inhibitors. 
• The discovery of pyrazolylbenzamide leads provided a series with 
more attractive physical properties for optimisation of vivo activity. 
• The design of pyrazolylbenzamide with the appropriate balance of 
pKa, lipophilicity and polarity lead to potent FGFR inhibition in vivo and 
the identification of AZD4547. 
• AZD4547 is a potent, orally bioavailable inhibitor of FGFR tyrosine 
kinases 1, 2 and 3. 
• AZD4547 is selective versus a number of off-target kinases including 
KDR and has favourable drug properties. 
• Genetic dysregulation of FGFRs confers sensitivity to AZD4547 in 
tumour cell lines and primary, ex-plant tumour models 
• AZD4547 is currently in Phase I/II clinical trials
42 
LO Discovery Translational science 
Innovation Centre China 
Paul Gavine 
Qunsheng Ji 
Xinying Su 
Katherine Ye 
Lucy Yin 
Jingchuan Zhang 
Liang Xie 
Min Shi 
Jessie Xu 
David Zhang 
Qiuli Guo 
Shirley Zhang 
Maggie Wang 
Acknowledgments 
Alderley Park UK 
Andy Thomas 
Maria-Elena Theoclitou 
David Buttar 
Linette Ruston 
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The discovery of AZD4547

  • 1. The discovery of AZD4547: An orally bioavailable, potent and selective N-(5-Pyrazolyl) benzamide FGFR1-3 inhibitor David Andrews AstraZeneca 27th June 2014 AnorcQ Industrial Summer School
  • 2. 2 FGF / FGFR signaling FGFR2 FGFR3 FGFR1 P P P P P P P P FGFR4 18 secreted ligands 4 non-secreted ligands Proliferation / migration / anti-apoptosis / angiogenesis Four FGF receptors, FGFR1-4, but multiple splice variants in extracellular ligand binding domain create many more receptor isoforms with different ligand binding specificities Targeting FGFR kinase inhibition the four receptors have different, but highly homogous, kinase domains
  • 3. 3 FGF / FGFR signaling FGFR2 FGFR3 FGFR1 18 secreted ligands 4 non-secreted ligands P PP P P PP P FGFR4 whole kinase domain sequence homology (276-277 residues) FGFR1 FGFR2 FGFR3 FGFR4 FGFR1 100% FGFR2 88% 100% FGFR3 86% 89% 100% FGFR4 77% 78% 81% 100% "key" ATP site homology (81 residues) FGFR1 FGFR2 FGFR3 FGFR4 FGFR1 100% FGFR2 94% 100% FGFR3 91% 90% 100% FGFR4 89% 89% 93% 100%
  • 4. Early pharmacological tools – Parke Davis FGFR inhibitors 4 N N N O O NH HN O HN N N N N O O NH HN O H2N PD166866 PD173074 J. Pharmacol. Exp. Ther. 1998, 286(1), 569 J. Med. Chem. 1998, 41(11), 1752 J. Med. Chem. 1997, 40(15), 2296 Bioorg. Med. Chem. Lett. 1997, 7(18), 2415
  • 5. Binding mode of PD173074 5 N N N O O NH HN O HN N PD173074 Crystal structure of an angiogenesis inhibitor bound to the FGF receptor tyrosine kinase domain EMBO J 1998, 17(20): 5896
  • 6. VEGFR & FGFR kinase inhibitor drugs in clinical development 6 F NH2 N N N NH NH O TKI258 Dovitinib O N N N H F N O TKI258 / Docitinib: Blood 2005, 105, 2941 BIBF 1120 / Intedanib: Cancer Res. 2008, 68, 4774 BMS-582664: Brivanib alaninate: Clin. Cancer Res. 2008, 14, 6146 O O O H2N BMS-582664 Brivanib alaninate NH NH N N N O O O BIBF-1120 Intedanib Phase III Renal cell cancer Phase III Non-small cell lung cancer Ovarian cancer. Phase III Hepatocellular cancer. Colorectal cancer
  • 7. 7 Aberrant regulation of FGF/FGFR signaling occurs in many human tumors FGFR2 FGFR3 FGFR1 P P P P P P P P Non-invasive bladder cancer Mutations ~70% tumors Multiple myeloma Translocation ~20% tumors FGFR4 18 ligands Proliferation / migration / anti-apoptosis / angiogenesis Colorectal and Hepatocellular cancer Up-regulated FGF19 Gastric cancer Amplification ~5% tumors Endometrial cancer Mutations ~15% Breast cancer Amplification ~10% ER +ve Squamous NSCLC Amplification ~15% Prostate (FGFR1 and 4) Up-regulated FGFR4 and FGF ligands
  • 8. Recently reported FGFR inhibitors 8 N N N O N H Cl Cl O O NH N N NVP-BGJ398 IC50 nM FGFR1 0.9 FGFR2 1.4 FGFR3 1.0 FGFR4 60 KDR 180 BGJ398 J. Med. Chem. 2011, 54, 7066 LY2874455 Mol Cancer Ther 2011, 10(11): 2200 N Cl Cl O NH N N N HO LY2874455 IC50 nM FGFR1 2.8 FGFR2 2.6 FGFR3 3.4 FGFR4 6 KDR 7
  • 9. Identification of AZ FGFR hit compounds 9 Screening of compounds prepared in an IGF1R TKI project in a kinase panel highlighted some pyrazolylaminopyrimidines that were more potent against FGFR than other kinases in the panel. A key project aim was to identify compounds that are selective inhibitors of FGFR suitable for in vivo testing in order to identify FGFR driven effects. In particular this meant selectivity with respect to VEGFR. Crystal structure and SAR analysis was used to guide chemistry to achieve desired selectivity goal. N N N NH N N H Br H O N RA Norman, A-K Schott, DM Andrews, J Breed, KM Foote, AP Garner, et al Protein-ligand crystal structures can guide the design of selective inhibitors of the FGFR Tyrosine Kinase. 2012. J. Med. Chem. 55 (11), pp 5003–5012
  • 10. Pyrazolylaminopyrimidines SAR (1) 10 N N N N H N NH R1 Br H Cpd R1 FGFR1 enzyme KDR enzyme IGF1R enzyme 1 540 590 6000 2 670 920 4200 3 69 680 7800 O N 4 32 3600 9100 O N N IC50 (nM)
  • 11. Pyrazolylaminopyrimidines SAR (2) 11 N N HN N H N R2 NH Br N O Cpd R2 FGFR1 enzyme IC50 (nM) KDR enzyme IGF1R enzyme 3 Me 69 680 7800 5 57 1100 18000 O 6 9.8 150 370 7 2.4 23 6800
  • 12. Early hit SAR: Compound 7 12 N N HN N H N NH Br N O ClogP 4.3 Aqueous Solubility pH7.4 (mM) 1.8 PPB (% Free) rat / man 0.6 / 0.1 Hep Metabol Clint (μl/min/1E6) rat / man 118 / 259 CYP IC50 1A2 / 3A4 / 2C9 / 2C19 / 2D6 (mM) <0.1 / 0.23 / 0.75 / 0.99 / >10
  • 13. Pyrazolylaminopyrimidines SAR (3) 13 Cpd X R2 FGFR1 enzyme IC50 (nM) pFGFR1 cell assay IC50 (nM) LogD 8 Br cPr 50 - 3.4 9 Cl cPr 40 - 3.3 10 H cPr 40 - 2.5 * 11 H 1.8 60 3.1 R2 N HN N H N N HN O N X MeO OMe * estimated Compound 11 properties hERG IC50 (mM) 8.4 Aqueous Solubility pH7.4 (mM) 0.58 Hep Metabol Clint (μl/min/1E6) rat 44 CYP IC50 1A2 / 3A4 / 2C9 / 2C19 / 2D6 (mM) >10 / <0.1 / 2.6 / >10 / >10
  • 14. Pyrazolylaminopyrimidines summary and next steps….. 14 • Pyrazolylaminopyrimidines inhibitors provided potent and selective FGFR inhibitors and understanding of SAR. • However the physical and ADME properties of the more potent pyrazolylaminopyrimidines were far from acceptable. • To improve on these aminopyrazole based inhibitors of FGFR1, we sought to identify alternative compounds, containing this key hinge binding motif, that could provide a less intrinsically lipophilic start point for developing FGFR inhibitors. • As part of this effort, compound 12 was synthesized and found to be a sub-micromolar inhibitor of FGFR1 HN N N H Compound 12 N N O
  • 15. N-(5-Pyrazolyl)benzamide SAR 15 Cpd R1 FGFR1 enzyme IC50 (nM) pFGFR1 cell assay IC50 (nM) LogD Aq. Sol. (mM) 12 cPr 66 610 2.4 * - 13 MeO 0.7 19 3.1 27 OMe O 14 0.9 6.0 3.2 1.4 MeO OMe * estimated R1 N HN N H O N N
  • 16. Characterization of lead pyrazolylbenzamide Compound 13 17 N HN N H MeO OMe N O N FGFR1 enzyme IC50 (nM) KDR enzyme IC50 (nM) pFGFR1 cell assay IC50 (mM) pKDR cell assay IC50 (mM) 0.7 210 0.019 0.24 LogD pH7.4 Aq. Sol. pH7.4 (mM) PPB rat /hu (%free) pKa hERG IC50 (mM) 3.1 27 3.4 / 5.7 7.6 >30 CYP inhibition IC50 (mM) 1A2 3A4 2C9 2C19 2D6 >10 7.5 >10 >10 >10 Hydrolytic stability T1/2 (days) pH 1 pH 4 pH 6 pH 8 pH 10 43 >1000 >1000 375 223
  • 17. Characterization of lead pyrazolylbenzamide Compound 13 18 MeO OMe N N H HN O N N
  • 18. Characterization of lead pyrazolylbenzamide Compound 13 19 30 25 20 15 10 5 0 Kinase selectivity screening (Dundee consortiumpanel) compd 6: 1μM, ATP: Km <10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 80-90 >90 Count of kinases in inhibition band % inhibition FGFR1 MeO OMe N N H HN O N N
  • 19. Characterization of lead pyrazolylbenzamide Compound 13 20 N HN N H MeO OMe N O N Models of metabolism Models of absorption Rat heps Clint (ml/min/106) Human heps Clint (ml/min/106) MDCK AtoB pApp (cm/s) MDCK BtoA pApp (cm/s) 60 8.1 10.5 x10-6 12.2 x10-6 In vivo PK Species (media) Cl (ml/min/kg) Vss (l/kg) Oral bioavailability (%) Rat (plasma) 46 3.9 50 Dog (blood) 12 1.3 30 Main site of metabolism identified as terminal NMe of piperidine: Oxidative demethylation and N-oxidation
  • 20. Pyrazolylbenzamide SAR: piperazine variation 21 X MeO OMe HN N N H O Het Cpd X Het FGFR1 enzyme IC50 (nM) pFGFR1 cell assay IC50 (nM) Solvent LogD pH7.4 Aq. Sol. pH7.4 (mM) N 13 CH2 N 0.7 19 3.1 27 N 14 O N 0.9 6 3.2 1.4 N NH 16 CH2 0.9 17 1.8 37 N H 17 O N 1.7 17 1.9 56 N 18 CH2 1.6 11 2.3 372
  • 21. Characterization of lead pyrazolylbenzamide Compound 13 22 MeO OMe N N H HN O N N
  • 22. 23 Pyrazolylbenzamide SAR: piperazine variation Cpd pKa MeO OMe MDCK AtoB pApp (cm/s) X HN N Rat heps Clint (ml/min/106) Het Rat Cl (ml/min/kg) # Rat Vss (l/kg) # Rat oral bioavail . (%) # N H O 13 7.6 10.5 x10-6 60 46 3.9 50 14 7.6 * 7.3 x10-6 75 - - - 16 8.6 4.1 x10-6 12 23 5.6 3 17 9.1 4.2 x10-6 7.2 7.8 1.8 4 18 9.2 5.2 x10-6 <3.9 59 11.7 16 Het groups 13 & 14 N N 16 N NH 17 N H N 18 N
  • 23. Pyrazolylbenzamide summary and next steps….. 24 Representative compounds in the pyrazolylbenzamide series fall into two groups:- •Those with moderate/high clearance and reasonable bioavailability, • associated with lower pKa, higher LogD and higher permeability and •Those with low clearance but with low oral bioavailability, • associated with higher pKa, lower LogD and lower permeability.
  • 24. Pyrazolylbenzamide summary and next steps….. 25 Hypothesis • Metabolism appears to be blocked by protonation of the terminal nitrogen. Higher pKa compounds show lower intrinsic clearance. • However compounds with higher pKa, lower LogD, and/or higher NH donor count appear to show poor absorption. Proposal • Explore N-alkyl heterocycle with moderated pKa and LogD. (increased pKa and lower LogD). • Explore NH heterocycles with increased lipophilicity and potential to sterically “mask” the polar NH group.
  • 25. Optimal pyrazolylbenzamides 26 Cpd FGFR1 enzyme IC50 (nM) pFGFR1 cell assay IC50 (nM) Cpd 19 Cpd 20 LogD pH7.4 Aq. Sol. pH7.4 (mM) pKa 19 0.2 12 2.4 157 8.5 20 0.5 12 3.0 * 148 8.7 Cpd Rat heps Clint (ml/min/106) Human heps Clint (ml/min/106) Rat PK medium Rat Cl (ml/min/kg) Rat Vss (l/kg) Rat oral bioavail. (%) 19 11 <6.1 plasma 16 3.4 54 20 9.7 <4.1 blood 13 1.7 46 * Estimated MeO OMe N N H N H O Het N NH N O Het =
  • 26. Optimal pyrazolylbenzamides 27 MeO OMe N N H N H O N NH Compound 19 was selected for progression to clinical development and given the development code AZD4547
  • 27. AZD4547 Discovery Synthetic Route 28 O O N H N O NH N NH O O N N NH2 O O O N NH O N O O O O O O O N O O N NH NH2 O O F N H NH NaHMDS THF + NaH Toluene NH2NH2 EtOH (BOC)2O CH2Cl2 heat, DMSO +
  • 28. AZD4547 Discovery Synthetic Route 29 O O N H N O NH N NH O O N N NH2 O O O N NH O N O O O O O O O N O O N NH NH2 O O F N H NH NaHMDS THF + NaH Toluene NH2NH2 EtOH (BOC)2O CH2Cl2 heat, DMSO +
  • 29. AZD4547 Discovery Synthetic Route 30 O O N H N O NH N NH O O N N NH2 O O O N NH O N O O O O O O O N O O N NH NH2 O O F N H NH NaHMDS THF + NaH Toluene NH2NH2 EtOH (BOC)2O CH2Cl2 heat, DMSO +
  • 30. 31 AZD4547 Characterization • AZD4547 is a potent and selective inhibitor of FGFR 1, 2 and 3 receptor tyrosine kinases FGFR1 FGFR2 FGFR3 FGFR4 KDR IGFR Enzyme IC50 (nM) 0.2 2.5 1.8 165 24 581 Cell IC50 (nM) 13 2 40 142 258 829
  • 31. 32 Drug properties Parameter AZD4547 Mol. Weight 463.6 Aq solubility (μM) 157 LogD 2.4 Form Crystalline, stable Protein binding (% free; mouse, rat, rabbit, dog, human) 0.7,1.8, 0.3, 2.9, 2.1 Blood clearance (ml/min/kg; rat, dog) 39, 13 Blood Vdss (l/kg; rat, dog) 6, 5 Bioavailability (%; rat, dog) 42–100 In vitro hepatocyte clearance (ml/min/106 cells; rat, dog, human) 12, <4.4, ≤8.6 CYP inhibition IC50 (μM at 1A2, 2A6, 2E1, 2B6, 2C8, 2C9, 2C19, All >10 2D6, 3A4) Ames Negative Mouse lymphoma Negative hERG (mM) >33
  • 32. 33 Genetic dysregulation of FGFR confers sensitivity to AZD4547 in tumor cell lines KG1a Sum52-PE KMS11 kDa 76- 52- 225- 150- 102- 225- 150- 102- 52- 38- 31- MCF7 FGFR1 FGFR2 FGFR3 GAPDH Tumor cell line Deregulated FGFR member/mechanism Proliferation IC50 (μM) SEM KG1a FGFR1 – Gene fusion 0.018 (n=3) 0.0017 SUM52- FGFR2 – Gene PE amplification 0.041 (n=4) 0.0185 KMS11 FGFR3 – Translocation (t4;14) and mutation (Y373C) 0.281 (n=5) 0.0294 MCF7 None >30 (n=6) NA
  • 33. 34 AZD4547 induces dose-dependent efficacy in the KMS-II multiple myeloma xenograft model Control 3 mg/kg qd 3 mg/kg bid 6.25 mg/kg qd 6.25 mg/kg bid 12.5 mg/kg qd 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 Control AZD4547 12.5mg/kg qd AZD4547 6.25mg/kg qd AZD4547 6.25mg/kg bid AZD4547 3mg/kg qd AZD4547 3mg/kg bid • Dose-dependent antitumor activity at well tolerated doses • Maximum efficacious doses – 12.5 mg/kg qd/6.25 mg/kg bid • Efficacy is linked to to AUC rather than CMAX NS –53%*** –70%*** –98%*** –100%*** 0 5 10 15 20 25 0.2 Mean Tumour volume (cm3) +/- SEM Days of Treatment Mean tumor volume (cm3) ± SEM
  • 34. 35 AZD4547 reverses a bFGF driven angiogenic phenotype Vessel formation in vitro Control media bFGF (5 ng/ml) bFGF (5 ng/ml) + AZD4547 (100 nM) Vessel formation in vivo Matrigel plug assay – mean vessel density 0.6 0.5 0.4 0.3 0.2 0.1 0 Control bFGF (1 μg/ml) bFGF + AZD4547 (6.25 mg/kg bid) MVD per 5000 μm2
  • 35. 36 AZD4547 in vivo tumor efficacy is not attributable to inhibition of KDR AZD4547 is inactive in KDR-sensitive xenograft models Tumor model Dose (mg/kg) Frequency of dosing Inhibition of tumor growth (%) Calu-6 6.25 bid 0 LoVo 6.25 bid 0 HCT-15 6.25 bid 4.7 AZD4547 has no effect on vessel growth in KMS11 tumors Control AZD4547 (7 days at 6.25 mg/kg bid) CD31 Staining Calu-6 Control Cediranib 3 mg/kg qd AZD4547 6.25 mg/kg bid –2 0 2 4 6 8 10 12 14 16 18 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 Mean tumor volume (cm3) ± SEM Days of treatment
  • 36. 37 FGFR2 gene amplified gastric cancer cells are very sensitive to AZD4547 Sensitivity of gastric cancer cells to AZD4547 in MTS assay 100 10 1 0.1 0.01 0.001 GI50 (μM) GC lines
  • 37. 38 AZD4547 causes dose-dependent tumor growth inhibition in Snu-16 gastric xenograft model Model FGFR2 expression % TGI by AZD4547 FISH Affy 12.5 mg/kg qd AZD4547 1.56 mg/kg qd po AZD4547 3.125 mg/kg qd po • Dose-dependent antitumor efficacy of AZD4547 at well tolerated doses • Evidence of tumor regression at 12.5 mg/kg qd • Efficacy of AZD4547 is greater in the Snu-16 model than in gastric cancer xenograft models with normal FGFR2 gene copy number (FISH = 1) 25 mg/kg qd Snu-16 6 +++ > 100 N/A AZ521 1 +++ 63 77 MGC803 1 +++ 45 72 1000 0 Treatment period (day) 800 3 600 400 6 10 13 17 20 24 27 Tumor volume (mm3) 0 AZD4547 6.25 mg/kg qd po AZD4547 12.5 mg/kg qd po 200 Vehicle control
  • 38. AZD4547 is significantly more efficacious in gastric cancer primary models with FGFR2 gene amplification GC model ID SGC100 SGC031 G009 SGC001 G001 SGC020 SGC002 SGC110 SGC105 SGC083 39 FGFR2 FISH score 1 Disomy 2 Trisomy 3 Trisomy 3 Trisomy 4 Poly-somy 5 Poly-somy 5 Poly-somy 5 Poly-somy 5 Poly-somy 6 Gene Amplifi-cation FGFR2 FISH GCN 1.8 2.2 2.6 2.6 3.3 2.6 3.6 4 4.9 30 Western Blot ++ + + +++ + + + ++ + ++++++ In vivo %TGI (25mg/kg/qd) 26 (P=0.030) 7 (P=0.419) 44 (P=0.004) 98 (P=<0.0001) 76 (P=<0.00 01) 25 (P=0.143) 26 (P=0.053) 14 (P=0.120) 10 (P=0.288) 162 (P=<0.0001)
  • 39. AZD4547 is efficacious against FGFR1-amplified squamous cell lung cancer primary models. 900 800 700 600 500 400 300 Tumor 200 0 3 0 3 Tumor 40 Model ID: FGFR1 IHC (IHC score embedded) L123 LC038 LC026 LC036 ++ + Score 6 ++ + ++ + - ve Score 6 Score 6 Score 1 FGFR1 FISH (FISH score embedded) 1,200 Efficacy study of AZD4547 in L123 1,200 1,000 1,000 800 800 600 600 400 400 200 200 0 Efficacy study of AZD4547 in L123 G1: Vehicle control G2: AZD4547 25 mg/kg/qd G1: Vehicle control G2: AZD4547 25 mg/kg/qd 0 2 4 6 8 10 12 14 Tumor volume/m^3) Treatment period (days) 0 0 2 4 6 8 10 12 14 Tumor volume/m^3) Treatment period (days) 1,200 1,200 1,000 1,000 800 800 600 600 400 400 200 200 0 Efficacy study of AZD4547 in LC038 Efficacy study of AZD4547 in LC038 Vehicle control AZD4547 25mg/kg/qd p.o Vehicle control AZD4547 25mg/kg/qd p.o 0 7 14 21 28 Tumor Volume (m3) Treatment period (Days) 0 0 7 14 21 28 Tumor Volume (m3) Treatment period (Days) 1,200 1,200 1,000 1,000 800 800 600 600 400 400 200 200 0 Efficacy study of AZD4547 in LC026 Efficacy study of AZD4547 in LC026 G1: Vehicle control G2: AZD4547 25mg/kg/qd G1: Vehicle control G2: AZD4547 25mg/kg/qd 0 2 4 6 8 10 12 14 16 18 20 22 Treatment period (days) 0 0 2 4 6 8 10 12 14 16 18 20 22 Tumor Volume (m3) Treatment period (days) 800 800 700 700 600 600 500 500 400 400 300 300 200 200 100 100 0 AZD4547 TGI in LC036F4 AZD4547 TGI in LC036F4 G1: vehicle control G2: AZD4547: 12.5mg/kg G3: AZD4547: 25mg/kg G1: vehicle control G2: AZD4547: 12.5mg/kg G3: AZD4547: 25mg/kg 0 3 6 9 12 15 18 21 Tumor Volume (m3) Treatment Period (days) 900 800 700 600 500 400 300 200 100 100 0 Volume (m3) AZD4547 G1: G2: G3: Treatment 0 0 3 6 9 12 15 18 21 Tumor Volume (m3) Treatment Period (days) 0 Volume (m3) AZD4547 G1: G2: G3: Treatment
  • 40. 41 Summary • Pyrazolylaminopyrimidine hits provided key understanding of SAR and binding interactions leading to potent and selective inhibitors. • The discovery of pyrazolylbenzamide leads provided a series with more attractive physical properties for optimisation of vivo activity. • The design of pyrazolylbenzamide with the appropriate balance of pKa, lipophilicity and polarity lead to potent FGFR inhibition in vivo and the identification of AZD4547. • AZD4547 is a potent, orally bioavailable inhibitor of FGFR tyrosine kinases 1, 2 and 3. • AZD4547 is selective versus a number of off-target kinases including KDR and has favourable drug properties. • Genetic dysregulation of FGFRs confers sensitivity to AZD4547 in tumour cell lines and primary, ex-plant tumour models • AZD4547 is currently in Phase I/II clinical trials
  • 41. 42 LO Discovery Translational science Innovation Centre China Paul Gavine Qunsheng Ji Xinying Su Katherine Ye Lucy Yin Jingchuan Zhang Liang Xie Min Shi Jessie Xu David Zhang Qiuli Guo Shirley Zhang Maggie Wang Acknowledgments Alderley Park UK Andy Thomas Maria-Elena Theoclitou David Buttar Linette Ruston Gail Wrigley Mike Dennis David Rudge Tanya Coleman Robin Smith Paul Gavine Teresa Klinowska Lorraine Mooney Neil Smith Dawn Baker Nigel Brooks LG Discovery Alderley Park UK Andrew Leach Richard Norman Anne-Kathrin Schott Jason Breed Kevin Foote Andrew Garner Derek Ogg Jonathon Orme Jennifer Pink Karen Roberts Frances Wang Lin Zhang Ming Li ShuQiong Fan Kunji Liu Zhengwei Dong Guanshan Zhu Lili Tang Alderley Park UK Elaine Kilgour Paul Smith
  • 42. Confidentiality Notice This file is private and may contain confidential and proprietary information. If you have received this file in error, please notify us and remove it from your system and note that you must not copy, distribute or take any action in reliance on it. Any unauthorized use or disclosure of the contents of this file is not permitted and may be unlawful. AstraZeneca PLC, 2 Kingdom Street, London, W2 6BD, UK, T: +44(0)20 7604 8000, F: +44 (0)20 7604 8151, www.astrazeneca.com 43 Andy Thomas | 22 May 2012 R&D | Oncology iMed

Notas del editor

  1. Mammalian FGF family consists of 18 ligands which exert their actions via 4 highly conserved transmembrane tyrosine kinase receptors. Four receptors and 18 different ligands. Dual actions of FGFRs Tumour via proliferation/apoptosis Angiogenesis, particularly thought to be important when ligand is increased. For instance after RECENTIN/Avastin treatment there is evidence for increased circulating concentrations of bFGF.
  2. Mammalian FGF family consists of 18 ligands which exert their actions via 4 highly conserved transmembrane tyrosine kinase receptors. Four receptors and 18 different ligands. Dual actions of FGFRs Tumour via proliferation/apoptosis Angiogenesis, particularly thought to be important when ligand is increased. For instance after RECENTIN/Avastin treatment there is evidence for increased circulating concentrations of bFGF.
  3. Mammalian FGF family consists of 18 ligands which exert their actions via 4 highly conserved transmembrane tyrosine kinase receptors. Four receptors and 18 different ligands. Dual actions of FGFRs Tumour via proliferation/apoptosis Angiogenesis, particularly thought to be important when ligand is increased. For instance after RECENTIN/Avastin treatment there is evidence for increased circulating concentrations of bFGF.